Timber treatment and lumber preservation in forestry describes the intensive treatment of timber with chemical agents to increase its durability and ability to be used in an otherwise inappropriate situation like inground use. Unfortunately, many of the timber treatments have proven to be extremely hazardous both to the workers and the environment; as a result many treatment centres have been forced to close and undertake massive environmental restoration and remediation. With many of the chemicals having a long period through which they are highly dangerous, the legacy of the chemical cocktails can probably never be totally eliminated.
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