Annual Report of the Secretary of Internal Affairs of the Commonwealth of Pennsylvania: Industrial statistics. Pt. IIIDepartment of Internal Affairs, Bureau of Industrial Statistics, 1902 |
Dari dalam buku
Hasil 6-10 dari 23
Halaman 64
... Portland cement . These Portland cements were imported into this country in a very small way in the year 1870 , and by reason of their great strength , as well as their adaptability to paving and other important work , their sale began ...
... Portland cement . These Portland cements were imported into this country in a very small way in the year 1870 , and by reason of their great strength , as well as their adaptability to paving and other important work , their sale began ...
Halaman 65
... Portland cement industry should seek a lodgment in that field . The Cobb Lime Company , an important concern , there started works in 1879 , but the product was too dear for commercial success and they were closed down . For similar ...
... Portland cement industry should seek a lodgment in that field . The Cobb Lime Company , an important concern , there started works in 1879 , but the product was too dear for commercial success and they were closed down . For similar ...
Halaman 66
... cement proving unreliable for the same reason that gave Saylor so much trouble originally . Subsequently , how- ever , improvements were made whereby the material was ground to an impalpable powder and slightly ... Portland cements, 66-68.
... cement proving unreliable for the same reason that gave Saylor so much trouble originally . Subsequently , how- ever , improvements were made whereby the material was ground to an impalpable powder and slightly ... Portland cements, 66-68.
Halaman 67
... Portland cement is essentially an artificial product . It began with the combination of the chalks and clays of England , which were mixed in the proper proportions to produce , when calcined , the highest grade of Portland cement , and ...
... Portland cement is essentially an artificial product . It began with the combination of the chalks and clays of England , which were mixed in the proper proportions to produce , when calcined , the highest grade of Portland cement , and ...
Halaman 68
... cement varies considerably . The principal constituents are silica , alumina , oxide of iron and lime , which , generally speaking , are found in the manufactured product in , roughly , the following proportions ... Portland cements, 68-72.
... cement varies considerably . The principal constituents are silica , alumina , oxide of iron and lime , which , generally speaking , are found in the manufactured product in , roughly , the following proportions ... Portland cements, 68-72.
Edisi yang lain - Lihat semua
Istilah dan frasa umum
AGGREGATE AMOUNT AGGREGATE WAGES PAID-Continued AMOUNT OF WAGES AVERAGE ANNUAL PRODUCT AVERAGE DAILY WAGE AVERAGE DAILY WAGE-Continued Average number AVERAGE YEARLY EARNINGS AVERAGE YEARLY EARNINGS-Continued BASIC MATERIAL BOILERS boots and shoes BOTTLE AND TABLE CARS Character of Industry CHENILLE children's shoes com-crease COMPARATIVE TABLE compared ered COMPARISON OF AGGREGATE COMPARISON OF AVERAGE COMPARISON OF NUMBER COMPARISON OF VALUE COST OF BASIC crease days in operation DAYS IN OPERATION-Continued footwear HOSIERY Increase or decrease IRON AND STEEL kiln leather LISHMENTS MATERIAL TO VALUE ments consid ments daily wage ments production number of days Number of es NUMBER OF PERSONS NUMBER OF WAGE pared with 1901 PERSONS EMPLOYED-Continued PIG IRON PLOYE Portland cement preced preced-compared PRODUCT PER EMPLOYE RECAPITULATION OF COMPARATIVE RELATIVE PER CENT SILK-BROAD SKILLED AND UNSKILLED tablish tion tons VALUE OF AVERAGE VALUE OF MANUFACTURED VALUE OF PRODUCT-Continued VALUE OF PRODUCTION WAGES TO VALUE WOOLEN AND WORSTED WROUGHT IRON YARNS