Summer 2004

The official magazine of the National Drilling Association. Drill Bits magazine is published three times each calendar year, April, July and October. Members of the National Drilling Association receive complimentary copies as part of their membership benefits.

When Heber Mining & Exploration Co. received a call about a core drilling job, the project sounded basic and uncomplicated. The customer wanted a bid on job involving approximately 52 borings drilled to an unknown depth to determine the depth to bedrock (basalt). The job would involve coring at least 15 feet into the formation using an “N” size triple tube core barrel. Read More...

It is ironic that Alaska’s greatest natural disaster made the Port of Anchorage the most dominant marine facility in the state. Forty years later, the future of the port rests on finding stable ground. An NDA drilling contractor was called upon to assist in a $1.25 million geotechnical seismic study to gather more data on the strength and stiffness of the seabed near the Port of Anchorage. Read More...

NDA member Atlantic Testing Laboratories (ATL) recently took part in a project that included redesigning and reconstructing a dam on the Genesee River in Rochester, New York. For the project, which took place during a 10-day period in June 2003, ATL was hired to advance several vertical concrete and bedrock cores throughout the dam. The cores obtained would help determine the integrity of the concrete and bedrock — data necessary for redesigning the dam. Read More...