Qingxin He, Winston-Salem State University, visited our department for a seminar last Friday. Her excellent paper, co-authored with Jonathan Lee from East Carolina University, is titled "The Effect of Coal Combustion Byproducts On The Pricing Strategy Upstream Industries." They find price discrimination in the wholesale coal market as a result of scubbers (or at least that is how my feeble mind understood it).
In lieu of useful feedback, we provided a car tour on a beautiful day (a big treat in February). Here is a picture from Howard's Knob with Grandfather Mountain in the left background and Beech Mountain over Qingxin's right shoulder (you can see the ski slope).