Marietta Drilling and Boring Contractors 27819 State Route 7 Boart Longyear is the leading provider of mineral exploration drilling services and drilling products in the world today. The Company is the only integrated drilling services and products provider, combining engineering excellence, global manufacturing facilities and the most experienced drilling services group in the business. With over 120 years of global mineral exploration expertise and the most innovative products in the market, Boart Longyear ultimately delivers unmatched reliability, productivity and safety to the worksite. Marietta OH Drilling and Boring Contractors Prosonic Corp www.prosoniccorp.com Drilling Products Drilling Services drill rigs drill bits diamond drilling diamond bits core drilling rock drilling Mineral exploration Drill rigs Mineral drilling Diamond drill core Diamond drilling Core drilling Diamond bits Rock drilling Diamond Drilling Products Drilling Services drill rigs drill bits diamond drilling diamond bits core drilling rock drilling Mineral exploration Drill rigs Mineral drilling Diamond drill core Diamond drilling Core drilling Diamond bits Rock drilling Diamond Business Reviews Prosonic Corp Testimonials