1957. h Group on Marble Development h Ôubgroup Building up a Database on Marble h Ôubgroup xamining Mechanisation in Marble Quarries h both the Ôubgroups had submitted the reports. h Marble Development and Conservation Rules (MDCR), 2002 framed for conservation and systematic development and scientific mining of marble throughout the country h As per .
The manual presents various surface mining methods and techniques through artist renderings and appropriate descriptions. The productive coal fields of the United States were divided into four regions according to geology and physiography. A glossay of terminology is included. (DP) Publiion Date: Mon Jan 01 00:00:00 EST 1979. OSTI Identifier: