NH NH - David Oldham, 55, Columbia, 1 July 2015

The owner of a gunpowder plant convicted in an explosion that left two workers dead could soon walk free after a home invasion left the key witness against him dead...

Oldham was the manager of the Colebrook plant when an explosion killed workers Donald Kendall and Jesse Kennett. He was the only survivor...

Oldham, in his office about 30 feet from the flashpoint, suffered serious injuries. He sued Sanborn and the gunpowder plant’s parent company for $250,000 in damages and medical expenses. The case settled for an undisclosed amount in March 2014.

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David Oldham's death has been ruled a homicide, but many questions remain. He was found shot outside his home July 1...

Paige Oldham found her father's body outside his home. Investigators said David Oldham was shot in the head.

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A year after the suspicious shooting death of the lone survivor of the 2010 Black Mag gunpowder plant explosion, state prosecutors say the investigation remains active and open.

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New Hampshire Attorney General Gordon J. MacDonald and New Hampshire StatePolice Colonel Christopher J. Wagner announce that they are continuing to seek the public’s assistance with any information relating to the death of David Oldham. Mr. Oldham’s body was found at his residence at 926 U.S. Route 3 in Columbia, New Hampshire, on July 1, 2015. Mr. Oldham’s death was ruled to be a homicide due to a gunshot wound to the head.

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State police said that the investigation is active, and the shooting is not considered to be a cold case.

"I think we'll come to a resolution someday. Hopefully, these types of events on the anniversary will prompt someone to want to come forward. A relationship will change. They want to talk about it," state trooper John Sonia said.

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