], ittaking about one operation taking about eight minutes. The material is hour to bevel each tub. The next operation is the fit- feet in length, 16 inches in depth, and 24 inches in then left to set for about eighteen hours. The mould ting up of the iron frames in which the slabs are set. width,… … weight of these tubs, when completed, ranges from 350 inside with a cement composed of litharge, boiled oil, drawn out. The operation is performed by means of to 600 pounds each. The soapstone tubs are made in a derrick. Projecting from each end of the apparatus whiting, and lampblack. three sizes,…
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