. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . 352 STEEL RAILS The construction of a special type of ship of large tonnage for ore trade,coupled with the invention of unloading machinery of great capacity at the terminal ports, has brought thecost of transportation down toa very low figure. Thus, a tonof ore is now hauled one hun-dred miles by rail from themost distant mines in the LakeSuperior range to a Lake Su-perior port, is loaded into carsor into the stock pile at a LakeErie port at a cost of less than$
. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . 352 STEEL RAILS The construction of a special type of ship of large tonnage for ore trade,coupled with the invention of unloading machinery of great capacity at the terminal ports, has brought thecost of transportation down toa very low figure. Thus, a tonof ore is now hauled one hun-dred miles by rail from themost distant mines in the LakeSuperior range to a Lake Su-perior port, is loaded into carsor into the stock pile at a LakeErie port at a cost of less than$ per ton. Fig. 235 presents an in-board profile and cross sectionof the Wolvin, a representa-tive of the type of present oresteamers. This vessel is 550feet in length, 56 feet beam and 32 feet deep. The largest single cargo of orecarried by the Wolvin was 11,536 tons, a feat which she performed in Fig. 236. — Ten-ton Bucket of Unloader in Hold of the Wol-vin. (Scientific American.)
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Keywords: ., bookcentury1900, bookdecade1910, bookidsteelrailsth, bookyear1913
