1. carbon (CARBON MONOXIDE), the site also host a toxic gas that is highly dangerous, and a lot of people always going to burn a limited area. Harmful to people is, if in the air as a percentage by volume exceeding 0.05% is dangerous if if there is 0.16% make senseless. In 2 hours if there are 1.26% to consciousness within 1 to 3 minutes of breathing and may life. in addition to toxicity. Gas, fuel gas, carbon is also available. When there is a high concentration in the air can burn and cause serious explosions. Fire in the open area, there is little danger from carbon gas into it.
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