Simple answers to simple questions

I saw this billboard outside of Philadelphia earlier in the summer too:
From "clean" coal to forged letters to "family" groups that don't allow families to join ... is there any depth Big Coal won't stoop to in its effort to keep from having to pay for the pollution it emits?

And once they run out of profitable coal seams in one area of the country, they'll blame environmentalists. Just like the timber companies blamed the spotted owl when they ran out of easily harvested old growth in the PNW.