OSH ACT of 1970 Section (5)(a)(1): The employer did not furnish employment and a place of employment which were free from recognized hazards that were causing or likely to cause death or serious physical harm to employees in that employees: A.) Vortex Recycling/North Wall Area - On or about 4/30/12, Employees were potentially exposed to fire and explosion hazards from the ignition of natural gas leaks in that gas supply hoses and hose connectors were not configured and installed properly. Flexible hoses were routed from the gas outlet/shut-off located above the floor to the natural gas fired heaters on the floor. The hose was a standard general purpose hose and was not listed/labeled for use with natural gas. The connectors utilized to join the hoses consisted of standard hose clamps and were not listed labeled for use with natural gas. B.) Vortex Recycling/North Wall Area - On or about 4/30/12, Employees were potentially exposed to fire and explosion hazards from the ignition of natural gas leaks in that natural gas outlets/shut-offs were not properly located and marked. Flexible hoses were routed from the gas outlet/shut-off located above the floor to the natural gas fired heaters on the floor. The natural gas outlet/shut-off was not marked and/or labeled so personnel could properly identify it in the event of a natural gas leak and/or other emergency. In addition, the natural gas shut-off was located 7-feet above the floor and could not be easily reached by personnel in the event of a natural gas leak and/or other emergency. ABATEMENT NOTE: Among other methods, feasible and acceptable methods to correct the conditions include complying with the applicable requirements noted in NFPA 54/ANSI Z223.1-1999 ~ National Fuel Gas Code: National Fuel Gas Code Sections 3.10 and 5.5.4 requires the manual shut-off valves and manifolds to be plainly marked and located within close proximity to the equipment it serves. National Fuel Gas Code Sections 5.5.1 & 5.5.2 requires gas utilization equipment to be connected with hose and hose connectors that are designed and manufactured for natural gas.