Annual Report of the Secretary of Internal Affairs of the Commonwealth of Pennsylvania: Industrial statistics, 第 3 部分Department of Internal Affairs, Bureau of Industrial Statistics, 1908 |
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共有 14 个结果,这是第 1-5 个
第26页
... PORTLAND CEMENT INDUSTRY IN PENNSYLVANIA . * Pennsylvania is richly endowed with limestone , shale and clay suitable for the manufacture of Portland Cement . These materials have been so disposed by Nature as to render them readily ...
... PORTLAND CEMENT INDUSTRY IN PENNSYLVANIA . * Pennsylvania is richly endowed with limestone , shale and clay suitable for the manufacture of Portland Cement . These materials have been so disposed by Nature as to render them readily ...
第27页
... cement industry in Pennsylvania , the well known cement rock of the Lehigh district has been the chief source of ... Portland Cement manufacture . The greater portion of the plants however must add a certain percentage of high carbonate ...
... cement industry in Pennsylvania , the well known cement rock of the Lehigh district has been the chief source of ... Portland Cement manufacture . The greater portion of the plants however must add a certain percentage of high carbonate ...
第28页
... cement . A small plant was built and the cement was used on the canal . In the course of about three years , however ... Portland Cement was suc- cessfully manufactured . After a series of experiments covering a period of about five ...
... cement . A small plant was built and the cement was used on the canal . In the course of about three years , however ... Portland Cement was suc- cessfully manufactured . After a series of experiments covering a period of about five ...
第29页
... Portland Cement is a series of practical opera- tions . The process is continuous and requires constant and careful supervision . The raw material is hauled in large quantities and the finished product is shipped in car load lots . To ...
... Portland Cement is a series of practical opera- tions . The process is continuous and requires constant and careful supervision . The raw material is hauled in large quantities and the finished product is shipped in car load lots . To ...
第30页
... Portland cement is gradually being overcome . Sulphuric acid regulates the setting properties of cement and for this reason it is always added in the form of gypsum or plaster of Paris after the material has been calcined . A well ...
... Portland cement is gradually being overcome . Sulphuric acid regulates the setting properties of cement and for this reason it is always added in the form of gypsum or plaster of Paris after the material has been calcined . A well ...
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常见术语和短语
55 hours 60 hours affected by strike Aggregate amount alumina amount of wages Average daily wage Average number Average rent paid Average value produced Average working hours Average yearly earnings BITUMINOUS COAL brick Capital invested realty car shortage cent clay companies reporting Companies working 60 counties Days idle days in operation Days lost Employes affected establishments considered Females Germans Highest rent hours per week idle on account industry inside workmen involved in dispute Irish Italians labor lime lost by strike Lowest rent machinery Males manufacture Market or realized Market value mills Minors Nationality not given Number of companies number of days Number of employes Number of establishments number of wage paid per annum Pennsylvania Portland cement pounds Production in given Question in dispute Question involved rent per annum report Idle Serious accidents silk Strike arbitrated Strike unsuccessful Total number Total production value of production wage earners employed workmen over 16