A is first thought to have been used for rock drilling in 1844. Many quarries used hand held tools that required the driller to suspend himself from a rope over the quarry face in order to place the drill hole in the required position. This system used small diameter holes and was not only terribly inefficient, but very dangerous due to flying rock as a result of the inaccuracy of the drilled borehole. With a maximum drilling depth of 100 meters and the ability to drill diameters from 50 to 200 mm, this rig meets many construction needs efficiently. Max. Drilling Depth Easy to operate for single-person use. Customizable equipment to suit specific needs. High mobility with a crawler-type design.
[pdf] Abstract: At 1:30 p.m. on May 29, 2017, an employee was changing a seal on a power swivel. The rigging chain on the tong broke, striking the employee in the side of his head. The employee suffered a fractured skull and was killed. Keywords: Broken Chain, Fracture, Struck By
[pdf] Federal and state authorities are investigating the cause of the deadly explosion and fire at a natural gas drilling rig in southeastern Oklahoma on Monday. Five workers died in what appears to be one of the country’s deadliest onshore drilling accidents.
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