DTH technique was used in well drilling exclusively to dig, accurate, vertical bores, and rotary drilling was used to turn the hole. The Directional DTH system, patented by Atlas Copco, was first used. [pdf]
Every year, drill rigs and other heavy, specialty equipment used for deep foundation construction (Figure 1) overturn potentially causing injuries and fatalities, as well as damage to the surrounding s. [pdf]
As operating conditions in performance tests may not agree with those specified in the specification, conversion is required to estimate performance of compressors in the specified service at site. Th. [pdf]
A thorough examination of lifting accessories is vital to ensure safe equipment use. Our SIS Lifting Equipment Engineers Association (LEEA) trained inspectors conduct annual and 6 month lifting equipment su. [pdf]
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