Tommy Davis couldn't find any happiness in former energy CEO Don Blankenship's sentencing.

Blankenship was slapped with a year in jail on Wednesday over the Upper Big Branch Mine explosion that killed 29 people in West Virginia in 2010, but Davis didn't feel any better. He'd lost a brother, a son and a nephew in a disaster that could have been prevented.

Davis gave a heart-wrenching speech in front of reporters after the sentencing hearing.

"This man has no remorse at all," he said of Blankenship, whom a federal judge penalized for conspiring to ignore safety protocol to produce more coal.

"He knows he could have done the right thing," Davis said. "All he had to do was make one of those 40 phone calls he made per day and check on production, and say 'shut it down.' He could have fixed everything, but he refused to do it."

Watch Davis' speech above, and read more about how mining companies trade safety for profit.