Shaft Sinking by Rotary Drilling
| Author | : Douglas H. Platt |
| Publisher | : |
| Total Pages | : 30 |
| Release | : 1945 |
| ISBN-10 | : UOM:39015074127591 |
| ISBN-13 | : |
| Rating | : 4/5 (91 Downloads) |
Book Synopsis Shaft Sinking by Rotary Drilling by : Douglas H. Platt
Download or read book Shaft Sinking by Rotary Drilling written by Douglas H. Platt and published by . This book was released on 1945 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes use of rotary drills to sink shafts at Arkansas bauxite mines. Standard oil-well rotary equipment is used, and the derricks are adapted from a type common in oil fields. It has been found that shafts in circular cross section, lined with streel casing surrounded by a cement sea, have structural advantages superior to those of shafts supported by timber and sheeting. Where formations are loose and water-filled, shaft sinking with a rotary drill is exceptionally practical, economical, and safe.
