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151 records found.
Prevention of Eye Damage
This Guide summarises the most important aspects of recognition, identification and control of the harmful agents that may cause eye damage or loss of eyesight at a workplace. ... Read more
Role of fault slip on mechanisms of rock burst damage, Lucky Friday Mine, Idaho, USA
Various methods of monitoring slip movements on bedding planes, as well as examination of rock burst damage in stopes, suggest that many rock bursts in the Lucky Friday Mine are closely associated with these movements. Slip displacements along bedding simultaneously... Read more
Trailing cable damage at longwall midface
What Electrical cables were damaged by chock pontoons causing arcing. Why Electrical cables were poorly located in fixed cable racks on the goaf side of the AFC spill-plates at the mid face area of the longwall Recommendations Recommendations relate to ensuring that electrical cables (and... Read more
Excavator Damages Buried 11,000V Cable
What The bucket of an excavator made contact with a buried 11kV cable at a quarry as work was being performed to remove oil soaked ground in the laboratory area. Approximately 300mm of soil cover had been removed. The excavator operator... Read more
Damage Delineation in Structures Using Laser Vibrometry and Remote Excitation
As part of a research program to reduce injuries and fatalities in the U.S. mining workforce, NIOSH is investigating the potential use of noncontact vibration measurements to identify hazardous ground fall conditions. ... Read more
Rock damage characterisation from microseismic monitoring
This paper outlines the concepts used to correlate rock failure with microseismic events and presents examples of microseismic monitoring together with associated computer modelling of the rock failure ... Read more
MOVEMENT OF VEHICLES IN THE VICINITY OF LOADED BLASTSITES
What Two incidents have recently occurred on mines in the Bowen Basin where heavy machinery, a drill rig and a bulldozer, trammed across loaded blastsites. In both cases, the holes had been primed with boosters and non-electric detonators and then loaded... Read more
Personnel Access to Heavy Mining Machinery : Guideline
This MOSHAB approved guideline outlines the requirements to be followed for safe worker access to heavy mining machinery and provides practical guidance on essential design aspects and operating practice. It describes access ways to machines, and maintenance, servicing and cleaning... Read more
KOMATSU 630E DUMP HAUL TRUCK TUB ENTRANCE DOOR
Problem The Tub Entrance Doors in their original design were contributory to many problems encountered being: The original doors werent robust enough to withstand the conditions encountered during mining operations. ; The damaged tub doors were pushed inwards causing seal failure,... Read more
FATAL ELECTRICAL ACCIDENT Classic Company (6BH) Castlewood, Vrginia at Dorchester Enterprises, Inc.Mine No. 4 Appalachia, Wise County, Virginia I.D. No.
What A 33-year-old General Laborer with 3 years of mining experience was fatally injured when he contacted an electrically energized metal cart. Why Causal Factor - No pre-job risk analysis was conducted by the crew or supervisors to identify hazards; The cable was... Read more
Fatal Electrical Accident Upper Big Branch Mine-South Performance Coal Company Naoma, Raleigh County, West Virginia I.D. No. 46-08436
What A 27-year-old electrician, with 2 years 9 months mining experience was repairing a shuttle car's trailing cable. He was electrocuted when he came in contact with another shuttle car's damaged trailing cable exposing different energized 480 VAC phase conductors. Why The... Read more
Minerals Industry Safety Handbook Part 5 : Equipment and Machinery
This chapter of the Minerals Industry Safety Handbook covers the mine site hazards associated with machinery. Sections in this chapter cover hazards and where they may occur (confined spaces, elevated platforms etc.), hazardous plant (pressure vessels, guarding of moving parts),... Read more
Longwall Roof Support Leg Lifting Device
Problem During longwall relocations the existing method for removal of the legs using slings resulted in a high potential for injury to personnel and damage to equipment. Solution A mechanical lifting device has been designed that is rated for the required load and... Read more
Truck fill boom for coolant and potable water
Problem Equipment damage resulting from operators failing to depressurise the radiator when adding coolant instigated a change in the procedure for topping up Cat 789 trucks. This change to the procedure identified an increased risk of slips and trips and the... Read more
Burty-Weise Bar
Problem Several problems arose when fixing the wire starter rope on the Heusker Mesh to the roof in front of the support canopies, using hand held roof bolters and 4 foot roof bolts: Means of temporary support of mesh to roof... Read more
Development of the load indicator plate
Problem Following an incident in late 1999 when a 1.5 tonne slab of rib coal fell and injured an employee, the subsequent incident investigation identified the fact that the cuttable rib bolts in use at the mine (fibreglass) to support the... Read more
Valve Stem Protector Electric Wheel Drive Trucks
Problem Stems become damaged when struck by wheel motor cover latches and through loose rocks dislodging valves Solution A fixed protector bracket to eliminate valve stem damage Benefits Tyres maintain correct pressures. ; Reduces risk associated with changing tyres on back shifts during the hours... Read more
ROM Bridge ; Changing with Demand
Problem Peak Downs Mine realised through the current expansion phases, that there were major opportunities to improve one of the primary bottlenecks by reducing down time caused by delays to crushed coal feed to the CPP. ; The issue was three... Read more
Trailing Cable Shock Hazards
Undamaged trailing cables will isolate miners handling the cable from the hazardous voltages transmitted by the cable. To maintain this protection, the cable must be protected from damage and if it is damaged the damage must be readily detected and... Read more
Fire Suppression Systems
Recently a miner was seriously burned when the equipment he was operating caught fire. The operator hit the manual fire suppression actuator, but did not pull the pin. Thus, it did not actuate. There was no fire extinguisher in the... Read more
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