Show J BEST CEMENT ALLUT UTAH ALL AH I 1 1 II I I Blast oo s Toni r's r s s of Cement I IN 5 Union Portland C ment Plant E Devils Devil's Slide Utah 4 i By Dy FRED H. H RICHARDSON 4 NE hundred percent Utah ONE describes the Portland ce ceo meat ment Industry In this state All of tho raw materials used all tho the coal consumed and all the electrical electrical elec elec- energy employed In the manufacture of the cement are of Utah origin I About U fa Invested in fn plants and equipment here bere and at capacity some come barrels can be turned out dall dally daily l Portland is le not a special brand of cement rement but a term as Inclusive as all Irish applied to potatoes or sterling to sliver silver The name designates de a process rather than a variety The process Involves proper mixing crushing line fine grind ing and Intense heat In the mix are limestone marl shale clay blast furnace slag and gypsum One does not have to go abroad for any of them nor for fuel tuel or power lie He does not even have to send outside for far the powder with which to blast the rock That too is made In fn Utah Cement that would harden under underwater underwater underwater water was made by the Romans RomanI and The art was rediscovered In la England in 1824 1821 and developed in the United States In the CDs GOs Utah was the second state west of the Mississippi river to practice it the first being Call Cali fornia In 1890 the Utah Ulah Portland Cement Co built a plant in Salt Lake City which for tor three years made natural cement on a small scale leale and experimented with portland port port- land Jand cement LaGue LaQue Campbell took the plant over in 1893 and Installed installed In stalled a kiln of the Danish ring ringoven ringoven ringoven oven type Commercial production Was not was not attained ii until Ul In n 1895 1895 when Richardson an Englishman English English- man financed a small dome kiln and actually made mada satisfactory Portland Dortland cement Clinker the bard hard globules resulting from heatIng heat heat- Ing the raw faw cement mixture to Incipient In fusion tUllon was burned ground on a set of old-fashioned old flour mill burrs and sold Ii fc In 1893 1892 the tho English Interests bought out LaOue LaGue Bs Campbell an find and built a new plant They produced produce d from 40 to BO 60 barrels a day of fairly fair fair- I ly Jy good Portland cement In th the e spring of 1898 the plant of the Utah Uta h Portland Cement Co was swept b by y tire fire It was rebuilt by the English Englis h I owners with a foot 40 kiln an and d electrical power They TheT found a market for about barrels barrel a day extending from Great Falls on th the tho north Dorth to San Francisco on the west and Denver on the east The plant plan t was wag completely remodeled an and d brought to a capacity of 1000 barrels barrels bar reI a day In 1910 It was takeover taken take n over b by the present owners in 1915 5 and In C 1925 changed from a dry I to a wet process plant Now it lies has haaI I two kilns feet teet lon long ane and a pr pro pro- a I of about 1500 1600 ba barela barrels bar bar- r rela rel a day C The Union Portland Cement Cement Co constructed a plant in Weber canyon canyon can yon at Devils Devil's Slide in 1908 5 With four kilns kline it produces about 2000 barrels of ot Red Devil cement a aday aday aday day employs an average of ISO men and owns a town with dwellIngs dwellings dwelling dwell dwell- Ings ing water system general store tore I drug store hotel clubhouse recreation recreation re re- creation grounds and s sewers sewer Mountains of limestone and shale I slope to within a few yards yard of the plant plan t. t Six and one halt miles northwest of Brigham City a cement plant was built In 1910 by the Utah-Idaho Utah Cement Co Capacity was waa Increased in 1917 by the addition of a third kiln to 1300 barrels a day Later the buildings were partly destroyed by tire lire and they have not been rebuilt In the manufacture ot or cement the rocks are blasted loose In the quarry Power shovels load them themon on dump cars care for tor transportation to the mill where huge gyratory Jaw law crushers reduce lumps of ot piano size to fragments B Secondary con d a r y crushers break the pieces still smaller Grinding is 18 often orten done dona In ball or tube mills The former are plated armor-plated cylinders half halt filled filed with tons of steel balls As the cylinder i revolves evolves the balls roll roil over and over reducing the material to toa toa toa a fine powder Before final grinding the material is I. exactly proportioned Automatic scales sealed and locked by the plant chemist measure the proper amount of each Ingredient In the grinding fine machines a thorough mixing takes place and the tha properly proper proper- properly ly proportioned power pl goes to the kilns The kilns are steel jacketed c cylinders lnders lined with fire brick resting rest ing on their sides at a slight angle from train the horizontal Heavy heavy- gears rotate tho kilns kilos which operate on tho the blow torch principle Nearly halt baIt a ton of coal is consumed for each ton of cement produced Temperature Tem Tern mounts to 2500 or de do grees green After Atter several hours the clinker about the size else of ot marbles and glass hard glass hard goes to piles plies to cool and await final Anal grinding During Dur ing Sag this second grinding process gypsum is added to regulate the setting time Burning produces the chemical change which makes the material so valuable for the construction of ot highways streets sidewalks sidewalk pub pub- Ho Ile and private buildings dams irrigation and water supply systems septic tanks sewer systems reservoirs swimming pools tennis courts dance floors and a thousand thou thou- thousand sand land other purposes Beside creating direct employ ment meat for hundreds hundred of ot men the tha Portland cement industry gives work to many more la a mining coal and cement materials in makin making explosives and in the tion of materials to the tho mill 1 and the product to the consumers It not only keeps large larn sums luna at home but brings much money from abroad to better the tha financial eon con of ot the state |