SHREVEPORT (AP) - A federal judge has sentenced the former owner of a company involved in an explosion and cleanup in Louisiana to pay $34 million and spend 4 years and seven months in prison.

  

KTBS-TV reports that David Alan Smith of Winchester, Kentucky, and four officials of his Explo Systems Inc. were sentenced Thursday in Shreveport.

  

The four other men got 2 to 5 years in prison, and must repay the federal government $93,000 to $207,000.

  

All five pleaded guilty.

  

Explo Systems had an Army contract to "demilitarize" artillery charges at Camp Minden.

  

Authorities investigated after a huge explosion in 2012. Explo Systems went bankrupt in 2013, leaving thousands of tons of potentially explosive M6 propellant.

  

Co-owner David Fincher of Burns, Tennessee, was charged but died days before his trial was scheduled.