Consider, for example, a spate of new studies that have found a rather convincing correlation between the presence of small particulate matter (PM2.5, the fine particles blown into the air by road traffic, coal-fired power plants, industrial manufacturing, and residential wood fuel combustion) and both obesity and diabetes.

FORBES: Two New Reasons to Worry about Air Pollution: Obesity and Diabetes

In the park, just over the road from the library, there is a coal dram - a memorial to the closure of the pit.

BBC: 'Little Moscow' remembers strike

"a vast number of on-road 18-wheeler tractor-trailer trucks hauling coal" in the Appalachian region of Kentucky and West Virginia could be converted to combination diesel-natural gas engines with the GFS system.

FORBES: Charles Koch

Muller , also said that "a vast number of on-road 18-wheeler tractor-trailer trucks hauling coal" in the Appalachian region of Kentucky and West Virginia could be converted to combination diesel-natural gas engines with the GFS system.

FORBES: Charles Koch

Burlington is a rail road and MidAmerican owns a utility that relies heavily on coal.

FORBES: Buffett Won't Dig Deeper Into Coal, Should Be Like Boone And Go For Gas

The campaign seems to be largely about what candidates will do to win them over: supplying coal, flour, alcohol or money, for instance, or promising to build a road or a bridge.

ECONOMIST: Will this weekend's election bring change?