. Cassier's magazine. THE KRUPP WORKS 449 have seven shafts, of which five are forhoisting, the deepest measuring about1600 feet. The blast furnaces at Rheinhausenwere erected in 1897. They are threein number, with outputs each of from180 to 230 tons a day. The wastegases from the furnaces are used un-derneath the fifty steam boilers whichform part of the plant. Each of thefurnaces is blown from four com-pound-vertical engines. Two compound-vertical steam en- necessary heating furnaces, machineshops, a rolling mill, etc. Steel cast-ings are turned out for ships, locomo-tives, dynamos, steam en
. Cassier's magazine. THE KRUPP WORKS 449 have seven shafts, of which five are forhoisting, the deepest measuring about1600 feet. The blast furnaces at Rheinhausenwere erected in 1897. They are threein number, with outputs each of from180 to 230 tons a day. The wastegases from the furnaces are used un-derneath the fifty steam boilers whichform part of the plant. Each of thefurnaces is blown from four com-pound-vertical engines. Two compound-vertical steam en- necessary heating furnaces, machineshops, a rolling mill, etc. Steel cast-ings are turned out for ships, locomo-tives, dynamos, steam engines, smallarms, etc. The specialty of the Gruson Worksis white iron castings. By selectingand mixing specially appropriate va-rieties of ore, and by using metalmoulds instead of sand moulding, amuch harder casting is produced thanthe ordinary one, the surface beingchilled bv the contact with the THE I50-TOX CRANE AT THE GERMANTA WORKS gines of 250 horse-power are used fordynamo driving; also a gas engine of40 horse-power, using gas from theblast furnaces. There are at Rhein-hausen also two open-hearth furnaceswith a capacity of 25 tons each, withthe required gasogeneous engines, anelectric crane of 50 tons to manipulatethe casting ladles, a travelling steamcrane of 5 tons, a 500-pound hammer,worked by compressed air, to forgethe steel-testing rods. The steel works at Annen, in West-phalia, turn out Siemens-Martin andcrucible steel. The works comprisethree Siemens-Martin furnaces, twofurnaces for crucible steel, of a capac-ity of 100 crucibles each, with the four The depth of this hard coat may bealtered according to requirements. These castings are used in the man-ufacture of arms and of industrial ma-chinery. When a greater resistance,but no greater hardness, is requiredthan in the ordinary cast iron, thesame mixture is cast in sand instead ofmetal moulds. The Gruson Workspr
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