Download or read book Machines for Underground Mines. Safety Requirements for Hydraulic Powered Roof Supports. Hydraulic Control Systems written by British Standards Institute Staff and published by . This book was released on 2006-05 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mines, Underground mining, Mining equipment, Roofs, Supports, Hydraulic equipment, Equipment safety, Control devices, Control equipment, Control systems, Safety valves, Pipes, Flexible pipes, Filters, Cut-out devices, Check valves