CHART: The gold price may grab headlines, but coal's rally comes as a shocker – thermal prices are up 22% in 2016 and coking coal's back in triple digits.
Both countries have poor records for enforcing environmental regulations, leading to tensions between communities and the mining sector, which the leaders of both countries have pledged to address.
Fresh off a bounce in the polls, Democratic nominee Hillary Clinton is promising to revitalize Pennsylvania communities hurt by a downturn in the coal and steel industries.