dakota bulldozer, 2018-01-07 01:44:05. A gas-spring cylinder opens the gull-wing engine side covers widely, allowing the engine and auxiliary components to be easily checked.
dakota bulldozer, 2018-01-07 01:44:00. Powerful S6D125E-2 diesel engine provides a massive output of 149 kW 200 HP. The engine power is transmitted smoothly to the final drives via a high-efficiency torque converter.
dakota bulldozer, 2018-01-07 01:43:53. A flat bottom frame,the monocoque track frames and forward-mounted pivot shafts provide good maneuverability in muddy terrain by preventing mud from building up under the frame.
mr.wicks Drilling, 2017-09-09 17:20:52. Until internal combustion engines were developed in the late 19th century, the main method for drilling rock was muscle power of man or animal. The drilling of wells for the manufacture of salt began by the Song Dynasty in China.
mr.wicks Drilling, 2017-09-09 16:33:06. Mining drilling rigs are used for two main purposes, exploration drilling which aims to identify the location and quality of a mineral, and production drilling, used in the production-cycle for mining.
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mr.wicks Drilling, 2017-09-09 08:48:13. A drilling rig is a machine that creates holes in the earth sub-surface. Drilling rigs can be massive structures housing equipment used to drill water wells, oil wells, or natural gas extraction wells, or they can be small enough to be moved manually by one person and are called augers.
mr.wicks Drilling, 2017-09-09 14:11:38. There are a variety of drill mechanisms which can be used to sink a borehole into the ground. Each has its advantages and disadvantages, in terms of the depth to which it can drill, the type of sample returned, the costs involved and penetration rates achieved. There are two basic types of drills: drills which produce rock chips, and drills which produce core samples.
mr.wicks Drilling, 2017-09-10 04:09:00. In early oil exploration, drilling rigs were semi-permanent in nature and the derricks were often built on site and left in place after the completion of the well. In more recent times drilling rigs are expensive custom-built machines that can be moved from well to well.
mr.wicks Drilling, 2017-09-10 05:10:31. In the 1970s, outside of the oil and gas industry, roller bits using mud circulation were replaced by the first pneumatic reciprocating piston Reverse Circulation (RC) drills, and became essentially obsolete for most shallow drilling, and are now only used in certain situations where rocks preclude other methods.
mr.wicks Drilling, 2017-09-09 07:03:22. Drilling rigs can sample sub-surface mineral deposits, test rock, soil and groundwater physical properties, and also can be used to install sub-surface fabrications, such as underground utilities, instrumentation, tunnels or wells.
mr.wicks Drilling, 2017-09-09 15:31:08. This frees up the drilling rig to drill another hole and streamlines the operation as well as allowing for specialization of certain services, i.e., completions vs. drilling.
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