The company had 700 dwelling-houses, rented to employees. The works and rolling mills of the company were situated upon what was originally a river flat, where the valley of the Conemaugh expanded somewhat, just below Johnstown, and now part of Millville. The Johnstown furnaces, Nos. 1, 2, 3 and 4, formed one complete plant, with stacks 75 feet high and 16 feet in diameter at the base. Steam was generated in forty boilers fired by furnace gas, for eight vertical, direct-acting blowing engines. Nos. 5 and 6 blast furnaces formed together a second plant, with stacks 75 feet high and 19 feet in diameter. The Bessemer plant was the sixth started in the United States (July, 1871). The main building was 102 feet in width by 165 feet in length. The cupolas were six in number. Blast was supplied from eight Baker rotary pressure blowers, driven by engines 16 x 24 inches at 110 revolutions per minute. The Bessemer works were supplied with steam by a battery of twenty-one tubular boilers. The best average, although not the very highest work done in the Bessemer department, was 103 heats of 8-1/2 tons each for each twenty-four hours. The best weekly record reached 4847 tons of ingots, and the best monthly record 20,304 tons. The best daily output was 900 tons of ingots. All grades of steel were made in the converters, from the softest wire and bridge stock to spring stock. The open-hearth building, 120 x 155 feet, containing three Pernot revolving hearth furnaces of fifteen tons capacity each, supplied with natural gas. The rolling mill was 100 feet in width by 1900 feet in length, and contained a 24-inch train of two stands of three-high rolls, and a ten-ton traveling crane for changing rolls. The product of the mill was 80,000 pounds per turn. The bolt and nut works produced 1000 kegs of finished track bolts per month, besides machine bolts. The capacity of the axle shop was 100 finished steel axles per day. The "Gautier steel department" consisted of a brick building 200 x 50 feet, where the wire was annealed, drawn and finished; a brick warehouse 373 x 43 feet, many shops, offices, etc.; the barb-wire mill, 50 x 250 feet, where the celebrated Cambria link barb wire was made, and the main merchant mill, 725 x 250 feet. These mills produced wire, shafting, springs, plough-shares, rake and harrow teeth, and other kinds of agricultural implement steel. In 1887 they produced 50,000 tons of this material, which was marketed mainly in the Western States. Grouped with the principal mills thus described were the foundries, pattern and other shops, draughting offices and time offices, etc., all structures of a firm and substantial character.