Long drill for coal probing and pillar removal

Journal Article · Fri May 01 04:00:00 EDT 1981 · Bur. Mines Technol. News; (United States)

OSTI ID:6287577

The US Bureau of Mines' probe drill system is discussed. The objective of the program is to provide a machine for economically drilling probe holes in coal mines to check for possible water flood or gas hazards ahead of the face. The system uses a lightweight air-powered drill that mounts on a lightweight frame anchored to the face of an expandable packer. The drill is portable and can be broken down to small components for ease of transportation. The probe drill system was successfully demonstrated in tests at the Kocher Coal Company's Porter mine at Tower City, Pennsylvania. Penetration rates exceeding 4 feet/minute in anthracite coal were typical in mine tests. The drill demonstrated its ability to drill through hard spots and rock seams which occurred frequently in all testing done, and it also demonstrated that it can drill long holes as several holes over 80 feet deep were drilled. (JMT)

• OSTI ID: 6287577
• Journal Information: Bur. Mines Technol. News; (United States), Journal Name: Bur. Mines Technol. News; (United States) Vol. 99; ISSN TNBMD
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
CENTRAL REGION
COAL MINES
COAL MINING
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
MINES
MINING
MINING EQUIPMENT
NORTH AMERICA
PENNSYLVANIA
ROCK DRILLING
UNDERGROUND MINING
USA