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Using Confined Space Containers to Prevent Hazards Confined areas are special environments that can pose a variety of hazards. These include oxygen deficiency and toxic atmospheres, hazardous physical hazards and flammable atmospheres. These areas are also prone to cause accessibility, communication and rescue issues. It is recommended to stay clear of these areas unless absolutely essential. Training It is important that workers working in areas that are restricted are educated to recognize hazards and take appropriate precau