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Air Drilling Stories & Photo Gallery

CENTER ROCK INC.’s® customers all have the same goal – get the job done as safely and as efficiently as possible. Even the very best work crews still depend on quality drilling equipment and services. More and more drillers are choosing CENTER ROCK products to help get the job done right. See the series of air drilling job stories featuring CENTER ROCK products and services below.
Job Stories

Chilean Mine Rescue

October 9, 2010 (The San Jose mine in Copiapo, Chile) – The CENTER ROCK drill being used to reach trapped miners more than 2,000 feet underground, often referred to as “Plan B” by the media, has broken through the miners today, far ahead of the earlier projections that drilling might take until Christmas.


132-inch Drill Sets New Record

The Metropolitan St. Louis Sewer District (MSD), the country’s fourth largest sewer system, is upgrading its storm and wastewater infrastructure in a 23-year-long, $4.7 billion initiative called “Project Clear.” The primary goal is to improve water quality and alleviate many wastewater concerns in the St. Louis region by planning, designing, and building community rainscaping, system improvements and an ambitious program of maintenance and repair.


Replacing the Harrison Avenue Bridge

The Harrison Avenue Bridge in Scranton PA, which was built in 1922 and has outlived its usefulness.

The objective was to replace the Harrison Avenue Bridge in Scranton, Pennsylvania, which was built in 1922 and had outlived its usefulness. 3C Drilling, LLC was contracted to drill (7) 96” diameter piers ranging in depth from 35’-55’ deep. (10’-12’ overburden and 43’-45’ rock) One pier was for a test pile and then (3) piers on each side of Roaring Brook and Central Scranton Expressway.



For many years, CENTER ROCK has been the leader in the manufacture and application of the multi-hammer canister drill (LP Drill®). From its use in the 2010 Chilean Mine Rescue, when 33 miners were rescued through the 26” (66cm) hole drilled by a CENTER ROCK LP DRILL, to horizontal push-pull applications, the CENTER ROCK LP DRILLs in any inclination from vertical to horizontal for mine rescue, burn holes, utility and ventilation shafts.
canister drilling in Nairobi


Nairobi, Kenya, will be getting a new skyline soon. The Pinnacle Towers will truly tower over all other buildings in the city, and claim the title of Africa’s tallest building. The development is a complex that consists of two high-rise buildings: a 984′ (300 m) tall, 66-story office tower and 659.5′ (201 m) tall, 40-story Hilton hotel with a retail podium over four floors of car parking. When it’s completed, Pinnacle Towers will be nearly twice the height of Nairobi’s second tallest building, the UAP Tower at 531.5′ (162 m).

Foundation drilling with Center Rock


CENTER ROCK was contacted by Malcolm Drilling to help with foundation drilling due to low production with conventional rock augers and core buckets on a job site for the Highway 56 and 15 Connector in San Diego, CA.

CENTER ROCK sprang into action and manufactured a series of tools ranging in size from 48 to 96 inches for this project. CENTER ROCK’s startup technicians arrived on site with the tools to assist Malcolm Drilling with the assembly and startup of the air drilling operation. This quite possibly was CENTER ROCK and Malcolm Drilling’s most challenging project to date due to the 60,000 psi UCS rock strength. With CENTER ROCK’s products, Malcolm Drilling was able to complete the project.