Arizona republican., 1920-08-08

bed of the Salt river at Tempe. Opera tions for obtaining gravel will start in the farthest corner of the pit The track of the railroad on which travel the cars carrying the material from the pit to the crusher crosses an irrigation canal on it's way. On arrival at the crusher the cars are hauled onto trestle and the gravel is dumped side ways out of the cars into large hop per. Here the gravel first strikes a large grizzly set of bars, through which no stone over 213 inches in size can pass. The function of the grizzly is to remove the large stones, and these large stones will proceed to the crush CTS, where they are crushed to smaller sizes. The material that passes through the grizzly will proceed to another revolving screen, where it is thoroughly screened and separated, and washed by large streams of water that play on the material while it is in the process of screening. The gravel or stone will be discharged into a bunker. A belt conveyor is provided to carry the sand to a large storage pile adjacent to the bunkers. The standard -guage railroad cars-there is a spur from the Arizona Eastern railroad on the site-will traVei underneath the stone bunlSerS and the gravel will be discharged by means or gates from the bunkers to the cars. The sand will be loaded in the cars by 
 "cIamsheI1 bucket attached.
 The producing of sand and stone for concrete roads is a problem in itself. In fact, contractors regard 1t as "haiE the batt1e" Maricopa county is to be congratulated on the fact that it has a progressive contractor, who has erected a most modern gravel plant, which will insure for the community good, clean, we'll graded material for the concrete road system. The provision for thor ough washing of the material insures the strongest concrete obtainable- h is not possible to have strong concrete if dirt adheres to the stone and sanc which are component parts Of the con- crete The cement mortar, which IS added, cannot adhere satisfactorily to the outer surface of the sand and stone particles if these particles are covered with dirt It is for this reason that Twohy Brothers are concentrating on the matter of cleaning and washing the rock and sand.
 Fine Modern Camp for Workmen
 In connection with the gravel plant it is interesting to note the progressive ness of the contractors in the matter Of erection of camps for their working force. A dining room and kitchen is nearing completion, the size of which will be IS by AS feet. This building will have a double roof for protection against the warm weather, and the llOOI VIII D0 Ol COuCAGl6 1AiSlCeAA VI wood, as is generally found in con struction camps.
 By providing concrete floors the cook is in a position to keep his quarters absolutely clean, because concrete floors permit him to use considerable Cleanliness is a prime necessity for the working man in construction camps as we'll as in home life. Furthermore, the city water of Tempe has been pipeti through the camp site. An inspection of the work already done and yet to be done in these respects shows that the contractors are convinced that their men deserve respect and consideration. They have successfully handled thou sands of men during past years of crowded experience.
 There also will be four bunkhouses | for the men, a concrete-floored shower l bath house and a concrete-floored meat house, which is to be provided with a modern ventilation system to keep the working mems food fresh at all times 1 Huge Warehouse Constructed | A huge warehouse has also been con-
 structed in which are stored tools oi | the very best make, electric motors
 some 4,000 feet of hose, pumps, fittings 1 Shovels, wheelbarrowS and other ma | terial. The measurement of this ware house is 102 by 25 feet and it has g | 12 foot platform to which standard 1 guage trains pull up.
 The narrow guage trains of durnI l cars operating between the plant ant l the gravel pit will consist of dunn cars each. hauled by an 1S-ton oil burning locomotive. A bunker also ha been constructed, with a 75-ton capa city, for coal to be used by the cranes
 Another interesting feature is tn
 huge general utility crane, which ha
 lifting capacity of Is tons, an
 which, the contractors declare, is on
 of the most useful instruments on tn ground Another of these cranes is g present on it's way here from Seatti The plant also has two powerful roa rollers direct from the Kelly Sprine field works. Furthermore, there al on the ground two carloads of raiIroa ties and BE- miles of water piping. To Have Eight Working Stations TWohY Brothers will conduct the