Attention to the protection of materials is an ongoing responsibility if waste is to be minimized. It is required during unloading, during storage periods, during construction procedures and even after construction is completed. The cost of protection is usually small compared to the cost of neglect. The following are some types of hazards and suggested methods of protection. Timber, plywood, and other materials that can suffer from exposure to sun should be laid straight on skids or boards and stored under covered racks or polyethylene sheets. Skids or concrete platforms that will keep materials off the ground are required for those which may be affected by rain or snow. Coverings free from holes and tears should be provided and well secured. To protect against wind damage, work should be adequately braced both for compression and tension. Prevention of theft requires a more than usual amount of common sense. Someone should check to find out at exactly what location materials are required. Insist that workers not leave them lying about during coffee and meal breaks. Issue materials in the packing boxes they came in and don't discard the boxes ahead of time. Much loss can be attributed to inadvertent burial. This can be minimized by keeping the site cleans and by preventing excavators and other machinery from spreading soil in the wrong places. Never leave lamps, torches, jets or other flames adjacent to work. Such burners require metal or asbestos shields. Sand and water must always be kept at hand for extinguishing flames caused by oil, oily rages, bonfires, or other cause. If explosives or shot-firing guns are to be used, compliance with all regulations is mandatory.