This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Both metal and copper oxidize when exposed to oxygen and this is a natural process. Copper that is exposed to the outside environment is more likely to turn green and that is why copper vases and decorative pieces in gardens are often green.
Forcing oxygen into a carbon-based fire will probably increase it temperature. The best way to feed oxygen into a fire is to draw oxygen up through it (in the same way as a chimney does) A hollow elder tube used to blow air into a fire. The effects of a chimney. (3) The Process of Firelighting.