Technology and the mineral industries . Mineral technology and output per man studies : grade of ore . Mineral technology and output per man studies : rock drilling . Mechanization trends in metal and nonmetal mining as indicated by sales of underground loading equipment

• 資料種別: 図書
• タイトル: Technology and the mineral industries . Mineral technology and output per man studies : grade of ore . Mineral technology and output per man studies : rock drilling . Mechanization trends in metal and nonmetal mining as indicated by sales of underground loading equipment
• 著者・編者: . . .
• 著者標目: National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.); https://ci.nii.ac.jp/author/DA14011832
• 出版事項: Work Projects Administration, National Research Project
• 出版年月日等: 1940
• 出版年（W3CDTF）: 1940
• 大きさ: 26 cm
• 出版地（国名コード）: us
• 本文の言語コード: en
• 件名標目: Mining machinery; Miners -- United States; Ores -- United States; Rock-drills; Mineral industries -- United States
• LCC: TN275
• 対象利用者: 一般
• 関連情報: Report; https://cir.nii.ac.jp/crid/1130000796207133568
• 関連情報（URI）: https://ci.nii.ac.jp/ncid/BA84523344#entity; https://lccn.loc.gov/41020640
• 掲載誌: Report; https://cir.nii.ac.jp/crid/1130000796207133568
• 連携機関・データベース: 国立情報学研究所 : CiNii Research
• 提供元機関・データベース: CiNii Books; https://ci.nii.ac.jp/books
• NACSIS書誌ID（NCID）: https://ci.nii.ac.jp/ncid/BA84523344 : BA84523344
• LC control number: 41020640; https://lccn.loc.gov/41020640