While he appeals a decision that served him a one-year prison sentence, former coal company executive Don Blankenship has paid his $250,000 fine.

According to a U.S. District Court filing, the wealthy ex-Massey Energy CEO paid the fine in Charleston on Friday, plus a $25 court fee.

Blankenship was sentenced Wednesday to the maximum prison time and fine for conspiring to willfully violate mine safety standards at Upper Big Branch Mine.

The southern West Virginia coal mine exploded in 2010 and killed 29 men.

A jury convicted him of the misdemeanor Dec. 3.

He filed his notice of appeal Thursday to the U.S. 4th Circuit Court of Appeals.

Judge Irene Berger declined to let Blankenship stay free on a $1 million bond while he appeals the case.