Download or read book Machines for Underground Mines. Safety Requirements for Hydraulic Powered Roof Supports. Power Set Legs and Rams written by British Standards Institute Staff and published by . This book was released on 2002-05 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mines, Mining equipment, Underground mining, Roofs, Supports, Hydraulic equipment, Equipment safety, Stays, Props