542 
N. 
Natural compounds of lead and zinc.... 34 
Native lead, Discoveries of.............-- 35 
INeodeshardeepiwellieace seen cece 65 
North* Dm pire er seo ee eee 90 
INGA CHRO NINE, G50000 sond00 odde 0a0000 6000 13 
(O), 
Oceanica, Lead mining in...............- 12 
Occurrence of lead and zine..............- 54 
Openicutiwork. eee ees eee 188 
Operations) Costiotn eee eee eee 
Oro:deposits ca see lee sae eee 104 
Breakers vay ee eve cose evens ben eee 264 
CEUSNOLS hs Saeae tae re dal aeee a wecxdoa eo 
DING er Sao Ak Paaeorieis etna ees atectereantiaets 233 
concentrating machinery............-. 273 
Ores, Treatment of..................2+.2+- 300 
Originiofiractures eee eee Cee eee eee 91 
OL MINE WAaLEL sine stecweisceec ses sicniesisen AGO 
Oronogol is cance Solis eee eee 46 
Osage county.. REC BUCER CSnaooecedarare | vlc) 
Output of endl anaes ZINCisenta esis pene 105 
of South Side Mining and Manufac- 
tuningiCompanyeneece eee eee eoree 106 
OZark Area sein Se eee cies RACE eee ee aD 
Oxides cia c ipa those ticesieeeahcee oes 448 
12% 
Paragenesis of minerals.................- 5038 
Parallel bar screens...................--- 208 
Phoenicians, The.......... ‘Fis afereeinetee Makes 5 
Phosphatessssencanissiis Sosa nuiacloaeceueions 448 
LAMAN, MOTIVE? Clio co00 0000 0000 0000 Co00 0000 4 
Physiography of Galena area............ 49 
leave abn, diwelexhacoouosodnqanveodb0 vo00 0000 CAD 
iBicropharmacolite: essences 449 
Pleasanton esis scceiss css eniieoes ese meen 69 
Portugal, Lead deposits in..............- 7 
BOWEL OTL Sorc eioc aera qoiuielon else sie eletetels 223 
jigs. BEE na esridoicnociconaduot mona $Coe 
“aiterat: The . AHN ie Ae ese OT 
BET chorea) epee Sera 78 
1a a oanenordtacodosaomearacoorcceccdos oocn 471 
Brospectidrillingyeeees eee eee 340, 365 
Prospecting drill machinery............. 220 
LON ACG bold Dee iar om OLR ae AS INNA G nb iG cy 179 
andidevelopmente ee eereeeeee rete 359 
Bulsiferawilliamvbeeeeeeeeceeeeeoreeene 13 
Pulsometerwehosieds kame eects 320 
Pumping.. Sevens 363, 373 
Halters, BAB OUBROAeAGG CODER Owns 
Pum p heads ives cece are clseer ste cuits estos 306 
Pum psy Mae asc nea aoesianee alus sarees 317 
Centrifugal ii eiaessc oe Sao eee 317 
Steaming swe Sos BR See as 314 
ROCATY A aveielcs ciors/Miwere enuisieialsteavensreste levees 315 
Lhd h HE COECe Rou e a soEo toca aces 2 «»- 463 
Pyrolusitecs necks ccs carci oneare aoe naeoee 466 
Pyromorphite..... Haid aliis och eietaiaatey ure meer voee 497 
University Geological Survey of Kansas. 
Q. 
QUATLZ coc Societe citenee ee nie cis piae sae 4 OD 
R. 
Reductions. ccs eee oe ee ee teas 
Revolving screens ................+0.--:- 261 
Rhombohedronsker seen e eee eee 471 
Robertsony dia Dios seairec eosin vanteeinelen 39 
ROIS ice seater see ac earner: 267 
Roll frames. steve BRAD Pood or ee a 
Romans, Mining by hoe ORS Ao oT oNE 6 
RoOScoey Hors src eal ce eee 5 
Rotary PUM Ps esecicoe se ae eee oes 315 
Rothwell DrgRi Davee cerscitaeo nice creer 39 
Rougher jig, Details of,................. 368 
Roundtable; Thess ieccek cece eewilsereiese 294 
Rubber belting, Wear of.................. 35D 
Russia, Lead mines of................ 00% 8 
S. 
Schmidt, Dr. Adolph..................0. 117 
SCLEOMS ar caietesn eeustesiontavasioe ee uleieie eee nears 257 
Shaking ecccicoisechersee see ee eee eOU 
Int} £0) Abeh-teeoroon Cora Ukbo sousiodod ogo unraa | 
IWGATLOh se sen neo eo Leu Ae ae ODE 
SECOMCENAP THING 5 500 0600 coa00b 0000 0000 0Od0 81 
Settling tanksys saeco mer ceierescehr 297 
Shaftisinkingpy: saces cone cece nes 189 
Shaking screens. £ Bape oat 260 
Shafting and drifting, Geet or Paar eid es i 341 
Shaler, Millard K.. Shales Pee 448, 
Shales and Bantonenl of Gaignne BBE OIOS 74 
Shoalicroek sero sss teece wa ceeesties 48 
Shorticroeks scans oacwsetea eels eosin aes 30 
Siberian lead mines, The...............-- 8 
Signaling apparatus........0. cee sees cece 2209 
Silicate ice cicwe tee wovceleisierais (one sereeeionets 448 
SIZIN Bisicecs vieisetinc cies net e en caer eee ee 257 
ADDATACUS Sos iajaisvsiseisyciaree ecto siaaoeoee 257 
Sketch of mining, Historical............. 374 
Slimemtreatmenteececcsce seen cee 366 
WASHING. ease ete ee totes ee eee ose. 
SMithsonitereshs. cise seen ce eek 40, 491 
Soft ground, Mining in................... 187 
South Dakota, Lead in................... 16 
South America, Mining in............ Beee 12 
South Side Mining Company, The.. wl ye tl 86 
SOLGING eee see are cites ok DARIO Me ase cae raes 336 
Spain, Lead deposits of..............0.-. 7 
Sphaleriteweeccawiouccuaene en oaees 39, 453 
SPLINEITiVveErins see wa Oe eeeee eee 49 
SS Dar aie yeeenee a Meares eevee eeeeseae na eee 490 
SsoamphoOisbaereiceteiemietlstiscreieteellciecte 248 
DUMPS iiiaecicwis sieisisicieiciocuicistecieiesrecieicies 314 
DUMP :WOL Ks esac conse nee seen eee 348 
Stone, Miss Irene G..............-se0cee2- 30 
StoneiCityrwellinacsscecassalcciceinese tenet 63 
SCO Pigs ee sae sle Sha eestor a oracle dete ee ever 199 
Structure of Galena mining district..... 85 
Suggested improvement in mining ...... 357 
Sulphidos eis wove tieeeieeece ness 448 
