Oxidation catalysts and other emissions controls can be installed to reduce the polluting effect of diesel generation and it must also be considered that peak-shaving DR resources will displace peaking units which are the most pollution-heavy resources on the supply-dispatch curve that are also closest to load centers.
The grey stands in contrast to the weathered red outer-coating of the Sheepbed unit, and the darker colour hints at a different oxidation state for iron (Fe) minerals that might be inside the rock.
Because iron has been found to speed up oxidation of cholesterol, scientists suspect it can increase damage to the arteries and lead to heart problems.
Within months of publishing their results in 1993, Medford and Alexander started AtheroGenics out of their offices at Emory to find a safe drug that would stop the oxidation process.