The Christensen range of surface core drilling rigs has, over many years, established itself a reputation for reliability and ease of use. Many Christensen rigs are available on a simple platform, a trailer p. [pdf]
A specially structured drill bit is designed for a reverse circulation down-the-hole air hammer to reduce dust production in the local vicinity of the drilling site during operation. Computational fluid dynamics and exp. [pdf]
There are two basic types of rotary screw compression: single stage and two stage. A single-stage rotary screw air compressor contains a single set of rotors in a single stator housing and is typically d. [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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