Show In Bi Mining M f i i rl Companies r C nU nUn anies n P. P A Ar Are r re rP P Adopting Ado A n opting n t ting 11 d Big g n n g p Concrete for tor Buildings an and Mine Shafts dl Do 4 r i h 2 r r A J J lr E j st s r r II I ll rr- rr 1 i r nJ fl r I 1 t N i r. r r 4 SZ G 4 by 1 t r i 44 ha f i 7 d I j e pt y rr t i y 3 3 y ry w v. v st t y Ia vr y r. r fi iJ 4 1 S w T Md i i 3 o EyS lr r v s r- r 1 v Y 4 A e- e A eI I I F t II I v.- v. N 4 h- h K KoY oY r 0 p n J I At loft top top tap tower at potash plant of Ogden Portland Cement Coment company at Brigham City Utah At right top top Ore Ore bin in course of erection Bott Bottom Interior Bottom Interior m-Interior Interior view now foundry for Garfield Smelting com corn pany pang Eight Drawing Right Drawing of cros section cross mino wino shaft by Bros Inc t j II I I I With war time restrictions restriction lifted and peace activities demanding a 11 speeding up of oi all industries particularly particularly larl tho the expansion of mining operations opera opera- an ambitious building program for tor the tho coming coining season has been outlined outlined outlined out out- lined by the mining men of ot this intermountain inter- inter mountain district Simultaneously with this ounce ment comes a review of the building material situation Possibly no other material for tor construction work ork op mining structures has made such rapid rapId rapid rap rap- id strides durin during tho the P past st year rear as has hast reinforced concrete Much luch of ot tho the mI m- m Portent work In mines mills and smelters in is now no being carried out inthis Inthis in inthis this material And not only enly nan has reinforced concrete con con- croto crete found rowing growing favor with contractors contractors contractors con con- tractors because of ot tho the tremendous advancement constantly being m made in tho art of at concrete building but be because because bo- bo cause causa of ot Its lasting and proof fire qualities nn and Its around all-around bill ty For years concrete has been accepted accept accept- ed cd as a fine tine material from which to bull build foundations where great and p permanency are called for but until until until un un- un- un til recently he the use of reinforced concrete con con- creto crete for tor slabs sla and columns was wag not nota a n. known knon or tested virtue It Is now quite common to make mako suspended slabs of or concrete six inches thick and from twenty to twenty five feet square which are p perfectly safo sato for apartment house or automobile salesrooms Coner Concrete te Milling Plants Heavy foundations and heavy ma ml machinery chinch chinery being the tho prime requisites in all large lare pl plants devoted dc to tho the reduction reduction tion ton of oC ores ores reinforced ed concrete has found popular approval 1 for tor tho the buildIng building building build build- ing of ot these plants and In some somo late lato Instances concrete is 19 being being- extensively extensive extensive- ly h used in tho the mills themselves oe re replacing replacing re- re placing tho the use ISe of ot wood launders nn and thereby stimulating the tho flow low or water carrying ore and tailings b by eliminating ing InK tho the trouble and anno annoyance ance from leakage o of wood constructed launders In tho the Arthur mill mUl of oC tho the Utah Copper Copper Copper Cop Cop- per company concrete has been used In the construction of oC standard Janney flotation machines Needless to I say eay a the tho company compan Is II experiencing I the utmost satisfaction from their use Tho 1 Immense e leaching plant pant that Is I the ino l latest teet addition to the Utah Copper facilities for producing producing- copper at Magna Mag- Mag ne nc la is also constructed of at reinforced concrete The principal section of that plant Is 13 the series of oC immense vate vats twelve In number each foot feet long loner 60 SO feet wide and feet deep Each vat will hold a a. charge chargo of ot tons tone of oxidized cop copper pel ore oro from which tho the copper will bo be extracted by means menns of oC acid Tho The made mado acid nold proof that would be difficult to do 40 k h. the material used to build tho the vats vat win was wood The Tha concrete will stand tand long loner after attel wooden vats vata would have havo yielded to the Lotion of or the tho hold and will prove tl far r lOll let cx- cx pensive for tor upkeep up At A ft cost coot of ot much Ion lone than tho of at an lIt all stool ol bin th the Federal Lead ny at mAt Mo yip re ro recently ro i Gently aa A bin for tor carrying carrying- its itu coarse ores oroa ut UI well vell RH as p Po group croup of QC n n other build In jre all T-all of ot concrete The rho Of ore oro bin ln stands CO GO foot fat above the tha ground And has haa a floor 1 of 35 15 by 45 It foot toot Tho The load of ot l lead al ore ora t this bin will hold at pop no Urns Mma n to very I heavy and thu tho floor had to Va be pro pro- J I pared te to sustain a load of I pounds U to tho the square toot OOh ThIs Thin was wa h pushed r b by tho proper distribution of ot tho the steel use used to reinforce the concrete So 50 slice i was the tho outcome of ot the tho structure that other storage ore e bins bint built bunt from reinforced concrete have ha been constructed by this company The Guggenheim Interests control the tho I Federal Federal Fed Fed- ed- ed eral crill Load Lead l company compan Concrete Lined Mine JUne Shafts One significant fact stands out inthe In Inthe the tho adoption of oC reinforced concrete for tor forthe forthe the lining of oC mine shafts It is the tho absolute safety this material insures Elimination of or the use uso of ot timbering in shafts especially In deep ones not only makes for fOl better ventilation conditions conditions con con- under underground round but Jut protects the tho underground workers This results ina In Ina Inn a n gain SOlin of ot efficiency as ns well as In lessening tho the liability of oC tho the employIng employing employ employ- Ing InS company for tor accidents accidents' resulting from defects detects in shaft timbering Already several of ot tho largo mining companies of or Utah are considering considering- the advisability of or lining their maln shafts with concrete Besides tho Haret safety virtues virtues virtues vir vir- tues construction offers many other a advantages are aro to bo be gained chief among amon which are arc permanency absolute protection against fires perfect perfect per per- alignment of ot the shaft at all times tho ability to control underground underground under under- ground water flows tIow an and tho the absence of oC decaying timbers Umbers requiring constant attention and frequent repairs Tho The saving of oC time Is 18 also an important factor not subject to dela delay from nn any of ot the usual cruses causes and operation deJa delays de dc- de- de Ja lays are arc expensive After trial of ot many different methods methods meth moth of or lining linin on tho the Catskill aqueduct In New York It was demonstrated blond beyond bo- bo yond ond all aU doubt that tho the best method metho was to lino shafts as ns they were being sunk Bunk Trio Tho rate rato the tho lining can be bo applied ranges from five fhe to fifty feet n a a day da n depending on tho the nature of oC the tho work nn and local conditions Local Operation Ono One of ot the tho most Interesting examples of or the application of concrete to mining min ing InS and smelting structures Is tho the erection tion of oC the tho new foundry building at Lt Garfield for tor the tho Garfield Smelting com com- pad pady which is shown sho in one ono of oC the above illustrations furnished L by VII VII- ladsen Brothers incorporators engineers engineers engineers en en- an and contractors of ot this city Here Is a complete completo diversion from the u usual ual maze of ot rusting steel trusses In their pI place nee one sees grouped stono arches Imposing and Impressive In their permanent outlook with tree freedom on from danger of ot fire that can only bo be obtained by the use uso of ot concrete The Tho arches shown in the tho picture havo have a height of oC tort tort- forty five l e feet tho the span be beInS' beInS being being be- be ing InS ent seventy five the feet and are aro thirteen in number The econom economy of oC concrete construction constructIon construction tion is largely largel a n problem of oC forms torms Two striking features in the form torm construction con con- at the tho Garfield foun foundry ry ac accounted accounted nc- nc counted counte for fOI Its economical execution The first la is that each eich of at the thirteen units of ot the bull building Is a a. duplicate of oC any Dony of or tho the others other This simplified form design n permitted tho the reuse of ot tho the forms torms several times The second important important important im im- im- im cost factor was the method o of hoisting and handling the forms forma by means of a largo larzo traveling power pov der der- er- er rick |