Open AccessDevelopment of optimal terrace pit coal mining systems. Technical progress report, April 1980. Report No. TPR-80-4
Author(s) -
Not Given Author
Publication year - 1980
Language(s) - English
Resource type - Reports
DOI - 10.2172/5170666
Subject(s) - terrace (agriculture) , mining engineering , coal , coal mining , geology , environmental science , geochemistry , archaeology , geography