mro mm vronoorr or fin ivmnc*

nun unm woman us ci x«

UT f CKS

DiflflQl XX - ULDICACTinTT (9 ItUflAMf JJTD cmQl XUII 11

4. L

1946

TrmM «X«wt« IaTt«tl«ktloa« - Mpcrt K. 17

I

rt

JAN JO 9- 7-3

ConfldeT3tlal

OF SO*

ftapart

A. L.

April 8ft. 1046

Introductory

Loo«tioQ Mid «xt«at cf dvpumitt > . - 3.

fh« an^hr«/t Gold Corporation * 2

- -~ - « - - . - 5

lomoh ooaoMitrntio M of faj^rj l»»rmls ft

flC* 1 In4ax aip of part of Florida, followia* pa«a- * * ft

ConfidentialIntroductory

Saaples from two eoap*nl«s »iniag Florida beach sands wero obtained by

Robert A. Laurence of the Geological Survey in the svMOr of 1944 as pnrt of

the nill-pro&iote investigation. These samples were tested for radioactivity

mad a further investi^ntion of the r&dioaotivity of the sands was «ada "by

A. L. Slaughter and S. S. Clabaagi* in Ap.il, 1945.

"lllBonlWwa* first produced fr«i Florida teach aaade in 1916 at Mineral

Clt/t about 4 Biles south of Jacksonville Bench. At the present time, rutile

aad sircon are also Wiac ooa»erci*lly extraotad fresi the saads.

Qoly a few cb««ical aaalyses for uranium are available. Determinations

of Th02 are by spectrefraphie anal/sis.

Ta* deposits of heavy aiasrait on the "b^aehas of Florida eaaaot now be

oonsidervd an ia^ortant source of uraniua and thoriun. The operation of the

BBparera §old Corporation is by far the largest of its type In the stata.

they produce only 250 tons per day or about 90,000 tons per year of ha^vy min­

eral ccncantrnte containing about 0,010 percent equivalent umnitei aad about

0.02 percent ThOg.

Location aad extent of depesits

The deposits at Mineral City have been described by tfort*ns~' as strips

-' Martens. Jaaws I, C. v leaah deposits of ilaenito . rutile, and sircon in floridai fla. Oeol*. aorvey, 19th Annaul Kept., pp. 134-154, 1938

occurring on the baok part of the beach at the foot of th« dunes and extend­

ing out a short distanoo in front of them. He says that durlag the early

period of working, the richest streak at the foot of the dunes contained 60

percent of heavy Minerals for a thickness of I to 8^ foot and a width of 26

to 26 foot. Later, however, the average of the sand as worked was around 20

Confidential

p+ro«at hftflvy ainaralt a*d tba 4i»*aaloiia iowmoat email «r. At Iba UB* af

Martana' writ!i* tft* working hud aitaadtd far a diataa** of U «il*a *1«M

tha baaob.

Toimaav-' aajra tfcat taa bicboat panamt of kmo-wa oao«otr«tloa ef ilmnlU,

-' Tftnun, n. o. n»rld« viatral iad»«%JTJ Flu, C*ol. Smrrw/, Ball. 94* pp. 138-14C, 19 4. v.

rutil«, and ilro^a o^eum alone th* * % oomt %«%««4m /*«kMn^ill« Md Ml-

Warm*, tat ih%t aAoih«f- p»«9ibl« ** * of O9m«nii«l dffT«lo«*«t ! la «*§t-

rn n^rlda aloag tn« ca*«l and

Intaraat ia mow foouead a a tba loaar grtoa ttnaa aaa tarraaa aaada. Tba

aot ooAcamtratad to aoob a blfb 4acr«4» a» on tba ba^ohaa*

diatributad orar Urvar i»raj\a. Ba dat>«tlta oa tba

aaahaa ara balac aiaad at

IlaaniU. rutil« , «ad ilrcom a*T« l»aa of prinaipal iataratt aar*Ufor«.

Maaatlta, ba«au«a of Iti hl«h r»di«ia%ivit/t Mw baco^i iajportaAt altkavch it

it ona a/ tba laaat aKtadaftt ooaatituanta. A wi^tt^ti*! rt of th« r*Uo*-

la aaatribv>tad o/ tiro on. Coapoiitioas T&T/ craatljr from plaan to

, but OA th« avaraca. lljaanlta 1» tha »a»t aVoodant iMiaty ln«r%l , ilrcoai

ooad aad nttla third. Maaaslta ia tba fourth a«at ftbaadaat h*av/ alu«ml i

oaja plaoat, but la ota«ra la laaa ataadaat tama atanrollU. apldata* and

At Vaaic«, oa tba tulf oo<tat aouth of Urmaotn, ^hoapb^ta aa oolltpliaaa it tbas_ , »*- -~ -f ... .*

fl at abiiadaAt oouatltuUat of tba d*rk

lia* caA

fao Jiayajajro <>«&* Corpora tloa it tao tuoootaor to tho Batllo Hlaimc Coa-

of nor Ida. fkio ooapoajr it alula* torraoo o*ada fro* * d»poiii 4 allot

of Jvikaoavill*. fla. (ft*. I), HOAT/ oia«jr«l» aro oiaooBtrmtod %y AO^AS of

n»»l/-cut*olopo4 aaaphrv* opiral eoaeoAtrmlor (wot Mill), foparatica of

ilawaito aa<i rutilo, tho oml/ ^n^rali l?«lac BTodu^od eoomerclaU/ at tho proooot

tiao. it aado b/ oloetronUtlo and aacaotlo loporatnrt (diy alll}.

tko ooayaryy aiaot 6000 toa» of a«ad par / wtoich cont^int aa avora^o of

6 poreont h*»v/ alaoralt. Hot av«mc« eoBpotltloa of tao ho" vy aiaoral coa-

i» aa follows:

llaaait*

zircon

natilo ft*

ocaslto 1-2JC

porcont It ooapotod of ataarollto, opidoto, caraot, kyaaito

amd oth*r ain«r«l». Cloaa tlrcoa ceasoatrtto eaa bo prodaood aad otaasoa aro

plaaaed In th« dp/ mill vaioa mill onaUo tho «*a*iar to pro4aM tlrcoc ooomor-

lall/. Jr/ sill tiiliac* vhieh ccatiia tao provioualjr alaod airooa aavo oooa

oaTod aad the tlrcoa will bo roeovorod. Hr, D. 0. Brooa, coaoral aoaafor, aa/a

taat aoaaiito o*a alto to oaaornttd ia th* drj alll. Pvatiblo aarkoto for

atito aro oolai iavoot&^ttod.

Potollod lAforattloa ooaoornlac aoaploa is «ivo& la UMI folloviaf

taaplot 711. 2. 3. aa£ 4 waro eollooto4 */ LoaraoM; all otaor5woro eolloetod

tgr SUmchUr aad Claaia^a. Tbo la tor ta«pl«» oaao froa aa oatir«l> difforoat part

uraaluaof tbo ur.i^uon. of nUtleaoUTlt* o*pr«t*od aa

AT« ty UtoorAtorr **B»A count i

«r*AiuA Atttr^AAtloA, t*t it

LUt of WM»1*«,

S*A?!A STfll ti too AA*!! fo#

told Oorp.

Bo. AAAiT. U 0 obAm. fM)g prodttct

O.OM 0.01X) 0.01

0.001

^H3 0.001

m 0.049

sm o.ooo

0.010 O.OS

6000

4760

HO

T

290

*»t Kill . »o«u/ q«*

«»t alll c«M«&tr*U«. Iwnl f««d to drj Bill.

tod atA*t UlliAct fro* *«t Alll,

tot Hill ooi0«Atr*t««, kAnyjr Alaorml f««d to drj Alll* »AA«AB "

STB?

ST-8

o.o&i0.^8

O.'JOO

106

JO

JO

at

nrr

MlUl« «

Zlroom fro* pilot

* m

It ! app*rat th%t UMI r»dioicUT« »%t«rl*l 1» oonctatmUd with th«

ftU*r*lt MA ttet It ! furU*r eoaeMitr%t«d la that p«rt of tte h«aTy Utr«l

cono«ntr>U 4iiah 4»M not «o«UlB tiM llvnlt* nAd rwtil*. lout vUleh *

ta« flr«AAftftl AtAABtU. UA th« bn«l» of t«« eA«pl«», tirwilUA Is r@t?cAtlAl« far

ml/ 16 U 3B AAt«AAt of tAA lotAl Activity.

flM ******»+ IA till* CABAAlt AM AOt kmOflA. V«t th« c4^»AA/ »1«A« AOIltlA-

p«r»tl«A«A4 At % rrnto of 1000 toAft p*r digr t OM /^r'» op«rmUoA would

of AAAT!/ 2,000.000

Kit Idaoral Co***? rta»a Ma4 frA.n d« oait *t UM aouthora o4*o

of tho ait/ of Tor* Booch, fit. (flf. 1) a*o«t 09 all* fro« iJrtioJl ttvor. Mr.

. f. Pricfor* it eo-ovtitr tad mm*c*r Aftl ia o*i of ito pl<»a»«rt of iho iohutry

ia Florid*. Th« coaoa^ oo«co»trt.t<,r it loe^t*4 «t k^lbaermo, a^nr DM ait* of

fora»r aiaiac co«r«ticna. Tho nio of kiAlax la 1"0 toaa por Aa/. T*+ pit ia

11 foot <Uo^; Iho da*c«Rtrmtloik of hoo.vj al»«r*ile &» aot octoai WIow iho nniural

alor lorol «^oro a ooarao «iili« ana4 ia oao^uAtorod. fh* t^nd %« alaod Avora^oa

B}£ tenTjr atfjior%la. ll«oa\ito. rutilo. aad tlrcaa axo Mi04 prodtteod, Baramti of

Ittaoa prodauUc.n fl««roa far Daoamtmr, 1944 iaAioato a r*tio of rutila to il«tm-

iU of -tout I to 7.

Iho folle»iaf aoBploa voro t%koa fejr

loat uTfcoiua aro a/ laoomtory CaJaaa couatta*.

Bo.foreoat Poreont

. V 0 ehoav

Liat of aoo^loa. Us Hn«r*l

^reottTb02

Toaa/4a/ cf proiaot

m

MU

MW

wuH',7

KiteK»

0.001

0.010

0,'>1

0. K*

0.004

0.030 0.013 0.01

0.09 0.009 0.01

1?G

1

163

1

V

1

t

fioaorl^tioa

* Mao4.

Banvjr miaoral ao

Tailino-a. aottljr

IlMtnito ooacontmUa

iiroom coaooatrtto.

Dry aiU tailiaca.

ft.

Boaploi wort tafean at ft pltooa aloaf th« tatoh botnooi* Jaekaoarillo

looch *ad St. Aiif****** (fig. 1). Tho croatott thiofcacte found OBO 2$ foot

(a*xBplo ff32). TTilo ooAplo, t"Jr*n Jiitt la fro at of tho liao of dua*§, ooa*

tolno 0.00ft poro«at o^uiT»loat wmaluB^y flold oount, Tao aott hichljr radi

ootlTO oaaplo io fro a o 0.36 foot lay or of blooJr toad *a& ooatalao 0.050 por

oat oquivalont urnaiUB. Tao thicinoit. do«roo of ooaaafttratioa, «ad width

of tho lopooito aro vory irrocular. Tbi 4opooit» *ro aot continuous ia«

aorth-iouth dlroctloa oloac tho boi^eh bat thii it tho dlrsotloaof tboir

mlaonoioa.

FiTO ooaploi ooro t«k«« fro a a ij ailo otrotoh of tooaa at Toaiao. o&

tho ftulf oooot (fig. 1). ftoro* taoll oonooatr«»tioao of olaoat puro «lrooa

woro fonad oa tbo nirfooo of tho dark ooad. A ooapl* of <3.irk oaAd tokoci aj

Mortoao froa thio boooh ooatalaod 9ft porc^at ollophoio.

' 0«>. Oil.

Saaploo oro lit tod oo tho follo»ior n«jr«. L«c*tiowi of o^aploo iro ohoi

oa

LI it of aa*pl«a froaboaoh 6ea««atration*

aaplo Thick, farcont f<m}T» r Ftrctnt *T)U>. ft. fiald lab. oboa.

ecu at oount

1.7 0.014

Hit 3.6

LootIIOK aad doicriptioa

mio

F183 0.3 0.023 0.0*3

FBS7 3.0 0.006

0.010

FS5b 0.3. 0.010

nst *.5 o.

O.Oli

t.s o.oo«

5.006

0,8ft 0.06? 0.040 0.006

1,7 0.011

1.6 0.010

tornV. of Potto ffcdro low

at Mid of

lack «ad liikt Mind Imjroro, ju»t S. of foal* fodfm loach OB fe«*ob la front of

llnck ooad, 8 fti. I. of it.

MAd 7.6 *. I. of

«ad light 1 OCA 1 1 on

l«/oro, »»o»

tand, thin la/oro of light to**, oa Woo» ju«t la front of »o«

, teo I. of Crnafeodrtoom*

llnck Mad* Mwh qu^rti mul light Mrt*ii*l , 76 ft. froa v«tor I. of foaleo Inlet on thu Gulf.

Mia4t attch qu^rti «»nd light Mttriiil, 75 ft. frco, wnUr, juat I* of fonloo lalat on th* Gulf*

Haok oaad, oloaor to vat«r v »» loontlooi.

Oocroo niok atadU ?0 ft, fro* vator1 mi. S. aloag boi%oh froo. 7117 aad 6.

of aatufml ccacentrfttion of ircon on aurfaoo of b*Bjh, block oaad only 4 lneh*i thiok, »AIM loca­ tion na /1S9.

ttaok OAOA 14 !. S. of T<mioo talot

Co;

Conclusion

Oa tha basis of tha prasaat lafcraatioa, tha dapasits of ha*ry slnarals

oa th* prasaat barvchas of Jiorlda a*saot ba ooaitidarad aa iaport^ot sourea of

urafliu aad.thorlua. Tha dlstrlbutloa of hsar/ siaarals in th* s*ads is too

to paratt a larfa opaarmtiosvF 4*

boat hapa of prodooiag umaiua n&d thorlua froa Florida sasds is la

i»-shora daposits amah as ara balai workad V tha uqsfcrays Oold Oarparatioa

naar Jaaktonvilla aad Uw tic alnaral Coao*ay at T*ro B«aoh. ftea axtaat of tliasa

dapasits is not kao«a smt taa oss baiac vorltad b/ tha Kuphra/s Gold Corpomtica

smst ba qpita larga to parsit tha aialag of 5000 taa« par dsgr. iraa in am op-

aratiaa of this slsa. tha r*dto*etlrltjr of tha aaad is so axtrasial/ low, that

tha actawl Mwunt of radiaaativa aatarlal ra*av*rad is not var/ l%rc«; 2iO teas

par da/ or 90,000 tons par yaar oont-»lnio« about 0.010 naraant urmAiuiaad about

0.02 Tsaroant 7h02. It ia ^uita possibla that othar l«rfa, lav-cradi daposlts

ba foiaaA.

X Ir

JACKSONVILLE °MINERAL CITY

PONTE VEDRA BEACH

-^HUMPHREYS GOLD CORP.

.FBS6-FBSI FBS2

ST. AUGUSTINE

-FBS4&5-FBS3

MELBOURNE

VERO BEACH RIZ MINERAL CO.

INDEX MAP OF PART OF FLORIDA

SHOWING LOCATIONS OF MINES AND SAMPLES

SCALE25 50 100 Mile*

SICTIQi II

or raosran^t urc cffaai locis in FLQRIJ*

Report

A. L.

entiaJ

ConfidentialOCMTflft

Introductory Svamarj. ...................... .................... .*....... 1

Phosphate rock. ................. * ......................,........ .. .*>" 2

Pebblo phosphate in the aain pebble field. ........................... 2

Occurrence. . .... i .................. .. ...,.»........* .. * 2

Mining and trert««nt. . .......................................... 3

Radioactivity. ................................................. 3

Ett*nr*s. ..................,.........................*..........

f i«14». ............ ................. ..^ ............. ft

Occurr«nc«. ..............I..................................... 6

Badio^stivity. ..................................................

Ffeospb&tio linettona. ................................................ 7

Coculan and p««t. ......................................................... 7

LUt of

No. 1 - Litt of §A*ples... .............. ............................ 9

iio. 8 - Calculation, of guivft.l tnt urnniuia. .......................... Ifi

Imbl« tto. 3 - Badioactivity, phorphnt«» and iarnni«a content of

product* fro* th* asin p«bbl« pnotrhftt« field. .............. 16

Illustrations (at «id of rm crt)

fig. 1 * Map of part of Morlda honing pho«ph*t* ar«as aad

Fl«. 2 - Indax nap, Florida am In p«bblA photphnt« finld,

locations of niu«9 tAculed.

S - Ooltian^r section of pebble photph*t^ b^d, 4 illes north­

east of Iroofcer. Bradford Ccxmt/.

PAH CACTI Yin CT FftWEim AH& l«Wt luCJCS IV fLOUTA

A. L.

Jttno 30. If46

Introdaotory

fork vao bagaa V Irtort A. L«*roaco of tM toolafioal urr^qr «tet ool-

lootod JO aaopioo from oporatia* otapaal ia b»%k tho »oVhl« *nd hirA-rook

fiolda during u« *vwtr of 1944. Additloaa.! work »» dono *gr A* L. Slw^h

«A4 S. 1. C1tW»<th tarlac April oad «njr, If45. Vtt p«ctph*>t« dopotita w«r«

f main iaUn»*t tet i««tt ««r« alto Ba4» ctt p*at omd o«%odaa.

VM p«bbl« pao«phjiU« aro U« ao*t Blfhl/ r*di<mctiT» of tfct rooko

A dlr^t rotation o*«v«om r»dUm«UTiV «« pkotpb»%o omtomt io ohotin

lot oollo*to4 fro« oin-t of OOYOA eompoAi^o vftwtlxic ia th< *** poVblo flold.

Tbo /oarl/ production of th* ooApoaleo 1§ Vberet Uir«o mlllio* tout of photphnto

rook oomtftlniac 0.013 %o 0.017 p«reoat nramina, or 0.09S to 0.029 p«roont

TmloBt ur«ai«B with thorlua contrlbmtiaf aoomt 4§ p«roo*t of Iko iolol

II i» prob*bl« that forthtr Mapllm* ooul<l sU¥ll»h rotorvoa of Mrond illlom

%oa* of ph^iphnt* coftt*i&iac 0.010 i^oroovt urnniua. X«oorT«o of pteophoU rook

for tho mia pottblo fiold AFO liotod i>/ u*ui»fl*14 (lt4a) at two Ml lion loa*

toao ooatalalac aoro taaa 70 p^rooot B.P*l.

fko aard*rock p**tpa*to is low la r»dio«otiTltjr. Collooial r>ho§ph»to «aloA

! alood frtjo) Uo old aard-rock mtto pito io alto low in activltf-

to oo froa tho phoojakatic lavtaorao liaottoa* ar« aot

Saaploo of oo%\ULaa a*d oondjr p«at war* f oaad to t* Tory low ia radioactivity.

tiau

look

Photphata rook in Florida fall* into on» of thr«e fanaral

land^pabbla pha»pfe»t«, rlvar-pabbla phaioh^ta, and h*rd-r«ck phcsph*t*. fram

tha standpoint of production «ad ratarvoa, tba rl?*ivpabbla deposit* art of

tha la*st importune*. No tatting or aampling of tha rirer pabbla a«poiit« w«

»d« doriac thi» iA?«fttifation. Th* % » »p«bbl« phoiphAt«** will hanceforth

reftr toltl/ lo the lftftd-7*bble d«po%ltt.

In tA» aal fbblt

in ih<i «»in p«bbl* fi«ld

in Hillaborou^h «nd rolk OoxintliB and trt«nd§ into M%nmt«* nnd Kard«« Counti»§

to th* south. Soa« pro«p«ctlm« hat b«« don« In th« outlying p^bbl- fields,

kit tfe«re Has b«on no r refection fro* them.

of ?lioc«Q«» ^«, whl«h cont«in» Ih* p«bbl« phos-

li«a uooonfor«ftbly xi:on th« Mieets* ft%»thorn« li«»tton«. Th*

p*rtt of th« Bon« fall ft/ fr*v%l which ««k# ni? Ui« phosphate dj|p*tlta conftltt

of 4T»int Mid p^bbl^t of pho^pWto rock in * «mnfu« of tfiad <nd clnjr, all in

vmr/i«« proportion*, fhs t>«bH«i »rt cow»oaly lv iach«t loac ^* to* *vftr«c«

di«jn«tor it ^rob^bly tH»tw««n i uid ^ inch»ii. Th«gr vary in color fro* light

cngr to black. R«ooy«»r^ble photphmto «ajr *akt up « much « 50 pore«nt of

matrix (th* tuni "mmtrlx" is mod to dttlcniit* th« nhoopbmto, civ. ***&

as «iu«d), bat umuilljr const itutot 25 to 30 percent. Tha matrix it f rom 1 to

46 faat in thicknatt imc th« oT«rturd«n of amnd mmd ola/ Mgr ba more than SO

foot.* Tka uamal ovarhirdan-antrix ratio it about o&« to on«» tha

thiokaaat of «*ch bain^ about 15 faat.

OooAden

3.

Mining of both <y?erturd«m and axtrlx It dont by dre«-llnt

The amtrix It damped Into a mall pit on the Mi* ef tfci out where It It alxed

1th water aad pooped to tht we thin* pleat. At the watalaf pi ant t the part-

Iclta co*r«er thaa 1/33 or 3/64 of an Inch *r« s^p^raUd by «ftthl&

lac. Tht tls« of th« optnla^t la tht final jor*«i It d«t4iriintd b/ tat titt

of th« l%r«ttt t«a4 c^ln». Tht flntr purtlaltt of photpiuto art Mp*imt»a

froa tht taad and elajr partlcltt tgr aydrotaparatloa* Ublln^, tad flotation.

Tivt \xtmal produatt of tht «*th«rt *nd conc«nt rating plaatt tblth «o la to tht

aaufaoturt of f»rtlllt«rt ar«; oo«%r«t p^bhln, flat pfttobl* (oft«c OAlltd

rook) , aad tht flat phosphatt rook or coaatatr*ttt. At toot aiats

all thn photphat* oaa W rtooTtr^d by «aahlaf and torttala*; aoat of

thu photphatt pnrtloltt are l«ir«tr thaa tht toartttt taa4 era Int.

Tht ttulvalmit uraalu* ton t ant of th* aaapltt «mt dwt«ndn«d V

, tlther In th* field or labor »tory. Soat h«vt both fltld aad labtrattr/

couatt. A miabtr of tht taapltt havm b«tn ch««lcall/ «ual7«^ f or mraaluai aad

to** h«r« b^en tpactrocraphloalljr aaal/ted for thorlaa. Tht rf» units of thttt

dtitralnatlont art givm la th* 11 tt of taaplot (t»blt 1).

About 46 ptro«nt of th« radloaotlYlt/ of aott of tht fctapltt It probabl/

dat to thorium. HIM tavpltt for whiofe both thorlua aad uraaltai aavt b««n

dttormlntd am lltttd In tablt 2. Alto iho«a it th« calomlattd t^ulraltat^

uraalu*. iad for nott of the taapltt thlt afreet veil with tqulrnltnt ur*nl\»a

by l*bor*tor/ countla^.

The loottloat of the alntt froa vftilch t%»plt« were oolltottd are thtwa

on th« ladex amp of the aain pebble field (flft. 8). Saftplet of the Tarlout pro-

ducts of the washers and flotation plants have shown th*t there is a definite,

but net absolute, relation between phosphate content and equivalent uranium,

the radioactive material is concentrated with the phosphate, fae percent i.F.L.

(Vena phosphate of lime), percent equivalent umaimm, and percent urnnium in

the usual products of the washers and flotation plants are sheen in tsible 3.

feme of th* fibres for B.P.L. contaat In this table are estimate* five* wjr

company officials at the time the samples were collected, others are from

approximate F^g determinations made in the Survey laboratory.

The pebble *nd U* phosphate concentrate have average equivalent uranium

contents of 0*028 and 0.023 percent respectively. Th* average uranium content

of the pebble on th« b«sis of ten samples which were chemically analysed is

0.01? percent, fhe phosphate concentrate, on the b«sis of seven sampled, con*

tains an ^vermge of 0.013 percent urmnium. Che reason for the grater %ctivity

of the pebble is not apparent as it contains less B.P.L. than the concentrate.

Samples of pebble from th« San tally mine of the Southern Phosphate Co. and the

South Fioree nine of the American Agricultural Gtumleal Co. (fig. 2} contain

more than 0.020 p-rcent uranium (table 1). The products from the Fence Valley

mine of th* International Minerals and Chemical Corp. are lower in radioactivity

than like products from the other mines (Uble 1). These differences in radio­

activity and uranium content in different parts of the mcin Babble field ladi- .

cate a somewhat uneven distribution of unmitjsi and other r*4io<tctive materials.

A sample (FP54) of super* phos?h«te which was obttin^d from th* fertiliser

plsnt of the Ameriomn Agricultural Ohamical Co. at Fierce conUlnt 0.012 per-

c^nt umnium and 0.019 percent equivalent uranium by laboratory oouat. this

product contains IS percent P20ft which is equivalent to about 40 percent I.F.L.

8.

Oemfldentte)

etanifield-./ lists reserves for the s»in pebble field at of 1°38. Inown

_/ fttansfield, 0; It* , Phosphate re-sourees of florlda; tf. 8. Geol, Survey, . 934,

reserves are five* V Ma e>s follow! J

74 percent I.P.L. «ad abort 70 to 74 perc«*it B.P.L.

130,000,000 lone ton* 1,870,000*000 Ion* ton*

Annual production of phoai>tont« from th» Balm p*bblt field i» *bout thr«*

Kill Ion toAt which profebl/ contalnj MB AVt»r«c« of 0.013 to 0.017 p«rmmt

Md «i ATtz^t* of 0.023 to 0.028 ptrount «q«ival«it ttranUa. further

Uht ttttftbliah re»«rr«* of v«rml »llliMi tdn« of

0.020 p»rc«nt

ptbblt f iIfpebble fields are shown on the index map (fif. 1).

to find outcrops or to take saaplea were Bade only in Hamilton Gouty. Mo out-

orops eould be found. Parts of this field have been prospected by the Inter-

Minerals aad Chemical Oo. of mulberry, but no *«mr>les are available

'roB this work*

Jellards-/ described the section in a sink hole in Bradford County, about

_J Sellards, B. 1., Miner*!* industries* Fla. tool. Survey, 2nd Ann. lept. 190v» pp.

V four Biles northeast of Brooker. Here, 99 feet of Batrlx containing

amounts of pebble phosphate lies beneath 37 feet of shell aarl and covered

slope. This locality dees not lie within any of th* outlying pebble areas as

outlined by Mansfield (fi*. 1, samples 67, 63, and 69). The bottoa 10 feet of

CVm

this faction could not be reached, but outcrop readings were taken on Ik* re­

mainder. Thli in ana of two pl«uses where mitcron counting was used In the

Florid* work. Details of outcrop counting and sssmlinc *re show on the columnar

section, (fi«. 3). (toe five-foot he* of pabble phos~h«ite was found to contain

0.012 percent efuiTBlent urtmiua by laboratory ocmnt. Tb4 pebbl* IB dark col«r*d

and »«k«» up 63 pf*re««t of this tod, conUint 0.015 percent ftiivAltnt uranium

1>7 laboratory count. Th« ola/ which is a binder for tha pabbla contains 0.006

p«rcant. Larga pabblt nnd ooncrntionnry aasaa* which occur at a narrow horizon

naar th« top of this bed contain 0.017 percent nranitoi, 0.032 p«rc«nt

rocfc photphite

aarA-roak phosphnta, utualljr conaldarad of Plioc«n» a£«, is

rasultin« fro a th* disintegration of tha Hawthorn* liittstona and th* solution

and radaposition of part of tha phosptetta. Tha hard-rock f iald is a loa* nar­

row bait extending south from 9uw«mn«« County to Pasco Count/, fithin this bait,

tha bard- rock phosphate occurs in localised deposits in fra*s**nts of different

shape* and sites, aostl/ bould*rs, irragulArl/ distributed in a aatrix of sand,

elv* end toft whit* phosphate. Thn d*r>oslts ssgr be as snch as 100 feet in

thickness and aa/ be corered by as s»ch as 50 feet of orerbnrdan. In the work­

able deposits* the h*rd-rock phosphat* foras 25 to 30 percent of the a*t*rial

and in aoeie places contains more than 80 percent B.P.L.

faaples of hurd-rock phosphate were obtained frca two Bines, both in Citrus

County, south of Dunnellon (fig. 1, saaplea 1 and 2. and ssxples 57 to 63).

One of these. Section 12 mine of tha C.A J. Cejsp Co., three Biles south of teft-

nellon. is tha only alne now operating in the h*rd-rock field, and of th* fire

Confidential

7.

, none contains «ore than 0,002 percent equivalent uranium by field count.

The shirking pho»rh%t* froa th* otVr aine, previously operated b> the same oomapay,

contains 0.003 percent efoiT*l*nt nr^nlxyw and the screen!*** 0.00? percent, both

V laboratory count*

Outcrop readings war* t«k«n on th^ wall of nn old hr.rd- rock pit, 4^ »!! §

north of E^innellon, Marion County, A two- foot «ii&pl« t t;\k»n at the r>oint whore

th* bait outcrop r«adin|[ m« obtnlnad (1? counts per «lnute)» «*» found to con­

tain 0.003 percent equivalent umaiusby field count,

Soverml eompanles are temping eolloidal phoephnte fro» th* surface* of

old hard* rock wait* ponds which aro now dry. fhia aetfirlal §*Kraf»t«a at tho

far enct of the ponds. It ototaiaa 40 to 50 percent B.F.I, aad is used % ferti­

liser without further treitaent. Saarolee fp6? and 63 are from an old pond adj*-

eamt to the Section 12 alne. The/ contain 0.003 and 0.005 percent e^iivsloat

urwiiuaby field oonnt. Samrple /?70, which cont*ln§ 0.007 equl relent uranium

V laboratory count it froa the Loncelt Phoiph»te Co.* Clark, Altchun Count/.

f?3 ii frnei the Br%dlej ^st^te alne <\t floral Cl^TtVCitrua Count/ end eontains

O.C06 p*rc*nt eouiv^l*uit ur«nlu« by leborntor/ count.

Pho ̂ phr. tic lift* fctone '-*

fwo eanplot ef liaostono thou^rht to be fro* the phoephatic Hawthorne for-

atien were taken in Ifaallton Count/ (fix. 1, atopies 65 and 44). Both aaaples

contain leai taaa 0.001. percent «<julr^lpnt ur^nlua by field count.

Coquiaa and peat

laapla 516^-522 eai cut from A two- foot bed of coquina oa t*a bank of the

iBdiM river nbout 9 allot south of fceVbournp, Brernrd Count/. Bo r%dlo-

activity is perceptible with th» field tnetrujient.

?wo fteapliM of p«*t MI* ooll*et«d at the aa»e loc*Ht/. this 1* m loowl/*

consolidated, bro«i, NUIG/ pmt«rial with a^undAnt orfmolc witter. Both «r« low

In r»dlo*ctlvlty. 4 two-foot laytr of dnrk brotn, iwidy wic* on the Wok of

nt T«ilc«, S«r«ao%a Couaty. conUlna 0.006 p«rc«nt qulTalwat uranlua

count. Thla materi-d «mdfts Into tha WMk tand balo*.

Confidential f.

fettle We. 1 - Uvt of

Pereemt e*uiT. If Percent U Percent TbO field lib. Chea. epeet. 2 eeii&t count

.lee

Deeeriptioa and leoetie*

TP2

m

m

fPS

mTV?

mo

mimam*fP14

0.003

\

0.00?

0.004

0.024 ^ 0.01

0.024 0.018 0.01

0.0»4 0.014 0.01

0.017 0.012 0.01

0.004 0.004

0.003

0.011 0.004

0.004

0.003

0.017 O.OW

o.ott o.oit o.oot

h*rd reek phetphete (ttdprln^ pa duet) C- 4 J* Cn*p Oe. vine Fella!*, ^rn^ode Oount/.

M«.IM.

wette fro* e«ihinir of hard rook pfceephite, lrm41ej[_I»titte aiAe,flor"! City , gfj^njuido Count/T".

74^ l.P.L. ooncentrnte, Ooronet Phoephete Co.. uoreaet, ttlle* eoreQ^h Coont/.

7B% l.P.L. eeneentret**

. pebble pkeepe^te, Tt-TJfl l.P.L.

tit«r teilluce, 42^ B.P.L.

flotfttlot. b«&de t 30^ B.T.L.

flctatlon Wilt, leee than 5< 1

entrix, 4CK r.K.L. , Swift 4 Co. fertilieer Vorke. A4rict»le v Pol County.

flotation tnllln^a, 96^ 110^

flotation tail lac A, 84^ 410^

oaeeatmt^e, T7i l.P.L.

pebble pkaeplMtet 73^ l.P.t.

7P14

v

o.cai 0.004

O.OJt 0.013 0.01

1*P.L.« iaeri Oo.. l*tea Perk, Polk

Confidential

10.

Tall* Io. 1 - Lilt of oaaploo continue*

Saaplo Pftrooat o^ui % 9 Porconl V Forcont taO. DooariptlOB aad looott< ho. fl-ld Ub. cAoa. opoot.

miO.OOJ

0.009 0.004

, 105 3-F'L.

fro* old

IF14

FF90

FFH

0.010 0.009

0.004 o.ooa

O.OJ4 0.013

ftfttrlx. Ifijt J./.i. , AatrletAomlttir*! Ch^fllcnl Co. toath

*ia*. ?l»rc«, Folk Count/.

0.09

J10

14 M»oH oMoatimU, l.F.L.

f?t9 o.on 0.009

FF3J \ 0.093 0.009

FF9i 0.093 0.009

FF90 0.009

0.01

0.01

Mlaia* Co. 91 iao» lariow. Folk Couaty.

flotattea ooaoontmt«t», 19/f l.F.L.

pooblo paoopltoto, 70i l.F.L.

FF9T

FF94

0.010 0.004

0.09T 0.010

0.009

0.09

do^rlo froa ol« work, l$-ao4 l.F.L Faava/ aiao of ihm Kouttooia Foot. Go. » Hifblaod Cit/, Polk Couai/*

o^c«utr*t », 75^ l.F.t.

FF99

fFJO

0.009 0.00?

0.019 0.007

oashor aliao, jUMrloon C/tnlaid Go.. lo,Wn Fork, Folk Oomat/.

'fPil 0.004

>T39 0.004 0.010

**** 0.010 0.014

ola/ ttador aetrix, Fo*oo fallo/ Ino of th* Jnt»mjitionft' aa4 Oboaicul Corp. , Polk

booty clay aatrix

TIo.

11,

Forcoatfifld

ToVU to. 1 - Li »t c»f

. U Porcxrat tj Porcrnt Th0

con ti mod

:>»jrl:tiou location

0.011 0.011

TV2* 0.002

ip«6 o.oo<

of t*1>l« mad flotation ooac«ctrnt«», 76.' f. .L. or better.

flotation taila,

potrifitd voed uid ben* iekod f ro»

0.01$ 0.017 0.013

FP35

7F^9

IMO

FP41

mam*FP44

0.0o5

O.OM

0.001

0.0ft 0.041

O.OSS O.OM

O.OM O.OM

o.oaa o.oa?

0.021

0.081

0.015

0.015

B.F.I. 128 «ln« of Int«»rr.-tltjri.>l uintrol Oo. .

ptbfclt. 5/8 to ! . *»0.P.L

flna pOblo, Im to J/8«. 74lt B.P.I

tobris,

oo«rto aprro*. 7Q^ B.P.I.

«l%s«tf ler proauct , 14-90 Book

imo of th+ IcmthoruCorp., ?olk Go oat/.

IM5 0.0*8 o.oa 0.015

IF45 0.038 0.019 (

7P47 0.(X57 0.015 0.0 BO

p?a o.ooe

Mtrix, 3»-40< 1. P. &.»Plfiroo »ln« of th* AM«rlc«n oullurml Choaltml Oo.. Polk Count/,

oo*r«o

flno

B.P.L.

B.P.L.

fF4f N 0.010 0.007 flotfitio» food, ooreoaod from drill coro. co&taini »bttad. qtc., Bo>^tt« tract of tfe« Aj»«rlc*n A^riculturnl Choaioml Co.

Confidentialfaait Bo. 1 - U§t of *?!*« eoatlntd

Saapla Forooat o*uir. U Forwent U F«ifo«nt Th02 Dotarlptioa amd loctticn Bo. fiold lab. <UM«.

_____count aaaat____________________________

FPflO O.Olt O.Ott 0.014 ola/oy aatrix, 4«Kl.P.L., 0«r-atrtinffl ain« of AA«ricnn icri- eultural Ch«aical Co., filltboroo^h Count/»

FF11 0.019 0.019 0.017 rogul** po«ol», 77% B.P.L*

fTll 0.014

IMl 0.011 flotatioa

FF54 0.014 O.OM 0.019

IFM 0.008

0.014 0.019 0.011lisor plaat of th« cultural Ohoalcftl Co.. Folk County.

FF5? nont c-o»r«* prvoaot* C. A J. Caap Ca.Section 11 aino (h«ird*roak pao».)

i, Bomaado

FFM 0.001

FFflt 0.001

FF60 0.001 t*tl0 froa va»a«r

JT61 aoao oo«r«« rojooto

JT41 0.001 colloidal paoipatU from adjacoatop oration ay Can, 50-52^ B.f.L.

IT43 0.001 colloidal pfcaopfcat*.

F M4 0.001 1.0* fcara-roek phoapbato froa oldpit 4\ alias norU of karioa

Confidential

JT66

Oonfldonti*!Mo* 1 * List of »a«plot continued

OOAt tl

pott.Lo f«ro*nt oquir. V P«ro«mt V Foroont fb02 Diooription aftd Uoatlon

lo. fiold Ub. ohoa.

0.001

0.001

« (t). mar 50, 0.6 1 !! north of lu«nnoo UTtr tori***, ftyiilton Oountj.

evthomo ll»«8iono (?) *t nvanoo

f**7 O.OU O.Olt

O.Olt 0.030 0.013

O.OBt 0.032 0.017

6.0' pobtolo pteiynato inooloro4 cl*j fro« sink Holt 5 vlloi mtt of IOOJBOJP. irodford

4« nark ! / ? at ^ottoa of

dark pot>VLo ind n»to« fro* Koriion n*«r top of FPC7.

fPTO 0.006 0.007 olloltal pnotphfito fr«» old rook w*tt« pi to, Lonoal* Co. Clark, Alaotaaa Ooxuitjr.

CaofLdontial

S«a*>lo

Confidential

faalo lo. 1 - Litt of tax*!** continued

not r»l»tad ta tha ph»aph«taa

14.

fi«14 ormnt

9169-fttt

0.008

t.0

a.o

0.000 t.o

, 9 !! south of

?o«t,

of

, toft, ttrocn, aiuM loc«tl<m

ia, tamd/, aa*w location.

tasd/, beach at Venice,

Fla.

Confidential

IB.

Confidential

fttbl* lo. a - of ar*nlu»

P*rc«*t V Percent fbO? P«ronnt qviv. U F*r««at ^ulv, U

ffl*

y?tIFT

?P14

FF16

mim*imipa?

0.016

0.016

0.01*

o.oiao.ou0.013

o.ootO.OOt x

0.010

0.01

0.01

0.01

o.oot0.01

o.oa0.01

0.01

o.oa

0*028

0.09*

0.019

O.Oli

0.020

0.08?

0.016

0.016

0.084

o.oat0.0*

0.017

0.(»

O.Ott

0.036

o.oa*

0,023

0.027

Confidential

U. i>. OtULUOICAL. iUKVtT

-j . _ _ G-E-DRG-IA

LEON r> .V"' \® C~f "^N0 f ,V'MAD,SO N VJ^£TO < *Tflii.* ^ / 65*«L,y « BAKt

j to ' r / ° i x 1 vx ' !--( Liv« oa kl

| / i5UWANNPE| i

~^V->\T A Y L o R L~X | QJ /ON i OHX^-V HFAY*TT*N k 0 (̂ 6^fl&

\ L vf&v.^.**\ ' - \" \ffis70V. / fclLCHRlS^^vClork

T ' \#3lALACHV-r-m^..X ./ XM[X LtvHp

c _ ^%f/ L IpiV^fe

VmA/a-fe; Phosphate areas from ClTRUJ^A Mansfield, U.S.G.S Bull. 7 ~~<3« 934, Plate S \ \

PHER NAUJ

A P A S C

V~HILLS80ROy^Ti«L » ^ ? '" j^ \«x^*

VN MAlJ/

^SAR>

^5*^^

LEGEND \

7^ Sample location and number of sample

'""f'r'r '''

','/"/,'/,?, Outlying pebble phosphate areas

r v^- - ->.

' ' Ifi ' ' '\ blASSAJJ «

! /"4«. / ^' A: F T x O Jack5pnvi|le

!/^DUV/AL !\-dWKT^ -! \- X S P'/^''«a lA^hr^i \_ «' ---iSTJOHMk"\oi *'" \ \

v^-y V1 Jll

UA | _ f-'\ POTNAM \

Vw ,/' \ \FLA*"«\

^ S^-J\^r A R i o ^ \7 J SVOLUSIA»Aellcn ,' f£^ tt\7TO« ! /&\ ^-- » ~ Z'/A \ \\

! - A K efeJA-, j\\ j r ^_; ^^ r -W\/Floral i ,'seMiMOLf-N 1 \ r\^v \City L__ \| VljA

A jji I ol/T^^||| ORA N6 , ^\UJ>

|V) ! ^-^ i --- i < W0 H""M "A" * \l[JG-H >X^^ \ * O^M«I bourn*

j^ffi$fy\ ) osceouA or jk-522,523 8,^OVV^/Leik«and v. ^\ 5£^

^^W]POL1< r\ U «"\ ^ ~ r ~ ~ ~ ~ | ") %

V i \VT ,,l HARDtt \oKetcHooet V\

k \ ^ [STUWC.S-Ui r""" """"""Xro AJ5ofA-jo« »»TO ^J .X Nk MART1H N\

<\^r-^' . [oKEfcHoere Y~--~ ^\ ^RLOTTt -AD.sl«" V i

in/ >^" I . PALM DE-ACH |

\ ̂ 6b/* * ^ H t M 0 R Y j J

Va^^-i r J" "j ! J' f I i I , ' 1

y%%%. Hard reck phosphate field

syyy/y// Main pebble phosphate fitf//////S ' ' '

Area shown on E~ia,. 2 which

( "JBRO^ARDJ

?/^ \ C 0 L L . * R , J

V _ i "" " /I?/Vw V-e>. _ J _ . /[

\ locations of mines sampled in the "^MONROf ^ Miami w,. f main pebhl* phnsphatt» ffeM >k 1 /

\ i ° A ° iFIG. 1 - MAP OF PART OF FLORIDA \ k\! I/

^^ Ci /jSHOWING PHOSPHATE AREAS AND SAMPLE LOCATIONS fV-J 1 fivjeQ/

* \ "» ' r> t^^^^^jf25 0 Z« 50 75 100 MlUM > ^^

/

,

Table No. 6 - Radioactivity, phosphate and uranium content of products from the main pebble phosphate field

Coronet Phosphate Co. Coronet

Swift & Co. Agricola

American Cyanimid Co. Baton Park

American Cyanimid Co. Brewster

American Agricultural Chemical Co.

South Pierce mine

American Agricultural Chemical Co.

Carmichael mine/

American Agricultural Chemical Co. Boyette Tract

Phosphate Mining Co. 91 mine, Bar tow

Southern Phosphate Co. Pan way mine

Southern Phosphate Co. San Sully mine

International Minerals & Chemical Corp. ^

122 mine

International Minerals & Chemical Corp.

Peace Valley mine ~

Average

Matrix

%B:P.L.

40

3d

15

45

58

39

% equiv. U

0.013

0.012

0.021

0.010

0.022

0.021

0.018(f)

0.010

0.015

*u

0.006

0.007

0.015

0.005

0.014

0.009

0.013

Pebble

% B.P.L.

73

73

70 68 67

77

70

70 70 '

7469

60

71

% equiv. U

0.024

0.022

0.035 0.039 0.036

0.029(f)

0.023

0.024 0.029(f)

0.026(f) 0.035(f)

0.015

0.028

£u

0.016

0.012

0.020 0.023 0.013

0.017

0.009

0.081 0.023

0.012

Washer tails for flotation%

B.P.L.

30

25

20

25

%equiv. U

0.008

0.009

0.009

0.013(fJ

0.007

0.010

0.009

#U

0.006

0.007

0.004

0.006

Washer tails not floated

% B.P.L.

5

5

% equiv. U

0.006

0.006

0.002(f)

0.005

£U

0.002

Concentrates

% B.P.L.

7578

77

75 77

80

a

75

75

76

76

*equiv. U

0.023 0.024

0.017

0.021 0.022

0.034

0.023

0.027

0.027

0.011

0.023

£u

0.015

0.009

0.013

0.019

0.009

0.010

0.015

-

Flotation tails

% B.P.L.

5

5

10

15

4

% equiv. U

0.003

0.003 0.004

0.002

0.002

0.005

0.002

0.002

0.003

f'./ .

(f) equivalent ur,anium determination by field gamma countinjg, all others by laboratory counting

U.S

. G

EO

LO

GIC

AL

S

UR

VE

Y

R2

IER

22

ER

23 E

R 2

4 E

R 2

5 E

<A (\ 1-

V} at CM o

f) (A 1-

(VI 1-

HIL

, __

_ _

r

__T-

<-

LS

BO

RO

UG

H

3.

j -

~^ ^

MA

NA

TE

E

PLA

NT

C

ITY

n

1

LAK

E.L

AN

D

i i

CO

RO

NE

T*)

to1'

6'

' , H _

____

CO

UN

TY

1 CO

UN

TY

iR

22 E

TlM

ULB

ER

R

PIE

RC

E

Oi

BR

EW

ST

-,

PO

LK

HA

RD

EE

R2

3 E

EA

TO

N

4

X/P

AR

K

#

v/ Y

7.

B

12.

AG

RI

%

O

ER

2. C

OU

NT

Y

CO

UN

TY

R 2

4 E

**A

RT

OW

B.

CO

LA F

T.

ME

AD

E

R 2

5 E

/TfK

AM

ER

ICA

N

AG

RIC

ULT

UR

AL

CH

EM

ICA

L C

O.

*-/.

CA

RM

ICH

AE

L

MIN

E

*2.

SO

UT

H

PIE

RC

E

MIN

E

* 3.

B

OY

ET

TE

T

RA

CT

AM

ER

ICA

N

CY

AN

IMID

C

O.

',4.

MIN

E

NE

AR

E

AT

ON

P

AR

K1

5.

OLD

M

INE

CO

RO

NE

T

\,6

. H

OP

EW

EL

L

INT

ER

NA

TH

.

CH

EM

ICA

L

l,7.

12

2

MIN

E

I ft

PE

AC

E

VA

L

, P

HO

SP

HA

Ti

( 9.

91

M

INE

SO

UT

HE

RN

10

. S

AN

G

UL

LY

-/

/.

PA

UW

AY

M

SW

IFT

A

"1

2.

MIN

E

NE

At

PH

OS

PH

AT

E

CO

. N

O.

4

MIN

E

1NA

L M

INE

RA

LS

8,

CO

RP

.

LE

Y

MIN

E

r M

ININ

G

CO

.

PH

OS

PH

AT

E

CO

. '

MIN

E

INE

CO.

? A

GR

I CO

LA

r

4 1 |

R2

6 E

FIG

. 2 -

IND

EX

M

AP

F

LO

RID

A

MA

IN

PE

BB

LE

P

HO

SP

HA

TE

F

IEL

DS

HO

WIN

G

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CA

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ED

United States Department of the Interior Geological Survey

Fig. 5 Section containing pebble phosphate beds, 4 miles north­ east of Brooker, Bradford County, Fla. (after Sellards)

ACTIVITYJO 40 30 20 /O

< \

>

c

0

0

o

<

c

o

D

3

1

\

0

Thickness in feet

14.0

25.5

5.0

4.0

2.5

5.0

4.0

5.0

5.0

1.5

4.0

Columnar Section

-̂T_iT_r_r

1 -,_ 31 -p-inm

^iS^i""^I cO 1

3? ' 'il^i 1 ^-

- c -e -0-

BACTIVITY- ^ o Count per minute at outt|~lD

|| DESCRIPTION

Covered slope

Light-colored marl, full of small shells.

/37# clay, 63# dark pebble, clay 0.006# equiv. U, pebble O.OIS^ by lab. count: darker layer at bottom contains 0.020$

equiv. U, O.Ol^t U: large pebble and con--m«7 cretionary masses near top contain 0«,032$ Jrt> equiv. U, 0,OV# Ue

^^^^ Sandy limestone ledge with fossils, o.y* Yellow ssnd with fossil plants end pebble

concretionary limestone ledge

Gray s^d-clay, oxidizing yellow

i.o», concretionary ledge with pebble

Sandy matrix with pebble phosphete

Concretionary ledge

clayey matrix with black pebble phosphste

Concretionary ledpe

Clayey matrix with black pebble phosphate

^ Vater

Formation

SCAL£ Top 0 ^0 ?0 ?0

Approximate radioactivity determined by testing^ *y Meosured and M led crushed rock, expressed in thousandths or percent . T on *\ '

i j. AJ j. ./ j. j f it i A. L. Slaughter equivalent uranium. Not determined for all samples. m j-i *rk -icnc April 30, l»45Uranium content determined by chemical analysis,

expressed in thousandths of percent.1001*71

ConfidentialTtbio it. 1 - Lift of

Mo.

m

TF2

m

IF4

mmFPT

FPS

trt

mo

mimafFli

FF14

P«r«aat equlr. V fisld Ino.

0.003

0*007

0.006

0.093

0.024

~ 0.0*4

0.017

0.00$

0.009

0.013

0.004

0.003

0.017

O.Ofit

Poroeat V Parcant TbO Dttoriptlon and loeatioa Ohta. apoat. ^

h^rd reok paotpaato (saipoia^ rr.- duet) C. 4 J. Oap Oo. «lno

\ F«liei*» l»m«iado Count/.

MP~1"*t

vacto fro a vaihiait of hard rook

Flonl City, Ksrn*ftdo County^ )

"0.01 70 B.F.L. ooao«ntr%to, Coronet Fbaaphalo Go. t Coroaot* Bill*-

0*016 0*01 79% l.F.L. tonaantrat*.

0.016 0.01 . pobbl* phavpaato, 7^-7J^ l.F.L.

O.Olf 0.01 altar taJltu**, CH B.F.L.

0*004 flotation baada. 30^ B.T.L.

flctatloa tails, lott than 5< B.T4

0.006 aatrlx, 4CK P.K.L. , Swift 4 Oo. Fertiliser Works, i4rlcol«. Folk

flotation tnlllo48, t6^ 010*

flotatiaa tailiAC«, )( $10,

O.OOt aoaaaatratas, TTjt l.p.L.

0.01S 0.009 pabolo phaaphata» 73< l.P.L.

FFli

FP16

o.om

0.0*8 0.013 0.01

C/mnlmid Co.. I*Ua Faxk, Folk Comtgr.

l.F.L.

Ckmfldentia]