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- W289179208 abstract "Abstract : The Bureau of Mines conducted a project for the Advanced Research Projects Agency (ARPA) Rock Mechanics and Rapid Excavation program to investigate rock classification as one means to improve rapid excavation technology. A standard rock suite was established, tested for standard properties, and distributed to contractors on request in the form of 1 cubic foot blocks. An extensive listing of ten physical-mechanical rock properties was compiled from Bureau and outside literature sources and is being presented in a Bureau of Mines Information Circular. A new technique for direct laboratory measurement of rock fracture energy was established. The requirements that must be met to build and to use a comprehensive rock classification system for predicting rapid excavation advance rate are discussed." @default.
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- W289179208 date "1973-06-30" @default.
- W289179208 modified "2023-09-23" @default.
- W289179208 title "Rock Classification and Rock Property Listing" @default.
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- W289179208 hasPublicationYear "1973" @default.
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