Charcoal in Coal Tells How Much O2 Was in Ancient Atmosphere

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Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)
Location: N/E Ohio, between Medina and Wadsworth

Post Tue. Mar. 13, 2012 8:01 pm

And apparently back when what was eventually to become anthracite was first being deposited, there was as high as 30% to 35% oxygen in the atmosphere. Today it is about 20.8%. ... 0257.shtml

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