rigs

Free Download C.P. Chugh, V.M. Sharma, Ken Steele, "Design Criteria Drill Rigs: equipment and drilling techniques" English | 2006 | pages: 413 | ISBN: 9054102578 | PDF | 22,5 mb This text discusses factors such as mast overload, capacity of drawworks, and deviation in the hole to be drilled and...

Free Download Jenny Bennett - Sailing Rigs: An Illustrated Guide Naval Institute Press | 2005 | ISBN: 1591148138 | English | 104 pages | PDF | 103.89 MB This concise reference book describes development of European and North American sailing rigs and defines and explains all the different forms...