The Port of Dampier in Western Australia, one of the largest ports in the world that exports iron ore, is undergoing expansion in order to better handle the increasing shipping traffic at the port. Part of the project called for construction of three mooring dolphins that were to be anchored into bedrock. Prior experience drilling in granophyre indicated that DTH hammer drilling would be the most efficient method to socket the pin piles into the rock.
Most everyone in the drilling industry is familiar with forward rotary drilling, but unless you are involved with larger-diameter wells used for irrigation, municipal or industrial applications, you probably are not aware of the advantages and some of the disadvantages of reverse-circulation drilling.
"I travel a fair amount for my work, and sometimes I have interesting travel experiences. I recently went to Pittsburgh to conduct another training class."
"In 1959, we had just lost our first child, Cindy Lynn, at birth, and I immediately was drafted into the army and sent to Fort Leonard Wood, Mo., for basic training."
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