AIR STOPPING ACTING AS GAUGE DOOR

• Main Authors: MALACHOWSKI MARIAN, BUZA PAWEL, BRODZKI ROMAN, KULIK STANISLAW, SZYDLO ZBIGNIEW, CHLOPEK ANDRZEJ
• Format: Patent
• Language: English
• Published: 31.07.1995
• Edition: 6
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS