Add to ORKGFrom Introduction: "An investigation by diamond drilling was undertaken by the Bureau of Mines at the instance of officials of the State of North Carolina to determine the thickness and continuity of the coal beds, physical conditions in and surrounding the beds that would influence mining, and the petrographic and chemical characteristics of the coals.
From Abstract: "This bulletin presents all analytical and test methods regularly used by Bureau of M...
From Introduction: "A critical review of the numerous test methods that have been devised for measur...
From Summary: "The investigation of barrier pillars in the Western Middle field is part of the compr...
From Introduction: "The investigations described in this bulletin are confined to a study of the was...
From Introduction: "In view of the increasing importance of the diamond drill in prospecting for oil...
From Introduction: "This report has been prepared, not only for the purpose of recoding the results ...
From Introduction: "The Bureau of Mines has received many requests for information concerning the me...
From Introduction: "This bulletin is a compilation of the results if coal analyses by the Government...
From Introduction: "The detailed report is presented in this bulletin, which gives full account of t...
From Introduction: "The investigation of barrier pillars in the Southern field is part of the compre...
Introduction; "The purpose of this paper is to present in collected and sequential form such a list ...
From Introduction: "This report presents the results of an investigation begun by the Government in ...
From Introduction: "The purpose of this investigation was to determine whether the coal from beds mi...
From Introduction: "The United States Department of the interior, Bureau of Mines, is not only inter...
From Introduction: "On account of extensive folding and faulting of the coal measures, mining in Was...
From Abstract: "This bulletin presents all analytical and test methods regularly used by Bureau of M...
From Introduction: "A critical review of the numerous test methods that have been devised for measur...
From Summary: "The investigation of barrier pillars in the Western Middle field is part of the compr...
From Introduction: "The investigations described in this bulletin are confined to a study of the was...
From Introduction: "In view of the increasing importance of the diamond drill in prospecting for oil...
From Introduction: "This report has been prepared, not only for the purpose of recoding the results ...
From Introduction: "The Bureau of Mines has received many requests for information concerning the me...
From Introduction: "This bulletin is a compilation of the results if coal analyses by the Government...
From Introduction: "The detailed report is presented in this bulletin, which gives full account of t...
From Introduction: "The investigation of barrier pillars in the Southern field is part of the compre...
Introduction; "The purpose of this paper is to present in collected and sequential form such a list ...
From Introduction: "This report presents the results of an investigation begun by the Government in ...
From Introduction: "The purpose of this investigation was to determine whether the coal from beds mi...
From Introduction: "The United States Department of the interior, Bureau of Mines, is not only inter...
From Introduction: "On account of extensive folding and faulting of the coal measures, mining in Was...
From Abstract: "This bulletin presents all analytical and test methods regularly used by Bureau of M...
From Introduction: "A critical review of the numerous test methods that have been devised for measur...
From Summary: "The investigation of barrier pillars in the Western Middle field is part of the compr...