In the mills of the Californian type the stamp is a cylindrical iron pestle faced with a chilled cast iron shoe, removable so that it can be renewed when necessary, attached to a round iron rod or lifter, the whole weighing from 600 to 900 lb; stamps weighing 1320 lb are in use in the Transvaal.
Ft., or 114 gals., of water an hour, and the steam pressure was 50 lb per square inch.
The principal tobacco-growing regions are Vredefort, which produced 258,645 lb in 1904, and Kroonstad (80,385 lb), the districts of Bethlehem, Ladybrand and Winburg also producing considerable quantities.
Gauge, and laid with rails weighing from 50 to 70 lb per yard; a flat-footed 60 lb rail, with the axle load limited to 14 tons, has the advantage for such lines that it permits the employment of a proportion of the locomotives used on main lines.
The metric system of weights and measures has been officially adopted, but many older standards are used, such as the libra (1.012 lb avoirdupois), alqueire (0.36 imperial bushel), moio (2.78 imp. bushels), almude of Lisbon (3.7 imp. gallons) and almude of Oporto (5.6 imp. gallons).
The Japanese hand grenades consisted of about 1 lb of high explosive in a tin case; the Russian cases were of all sorts, including old Chinese shell.
No Australian timber in the foregoing list has a less modulus than 13,100 lb per sq.
For years the standard freight cars have held 60,000 lb and now many carry 80,000 lb or 100,000 lb; a few coal cars have even been built to contain 200,000 lb.
The bridge is worked by hydraulic power, an accumulator with a load of 34 tons supplying pressure water at 630 lb per sq.
Gutta-percha-covered copper wires were formerly largely used for the purpose of underground lines, the copper conductor weighing 40 lb per statute mile, and the gutta-percha covering 50 lb (90 lb total).