Bomb squad detonates bags of explosive slurry found in Guernsey reservoir

Wyoming News Exchange,

Bomb squad detonates bags of explosive slurry found in Guernsey reservoir


GUERNSEY (WNE) — Two hikers who were traveling through the dry Guernsey reservoir bottom came upon bags of high explosive slurry last Saturday and reported it to Guernsey Park ranger Chris Delay. 

According to Delay, the hikers wanted to remain anonymous. 

Each bag was approximately two feet long by five inches in diameter. 

“We immediately called the bomb squad and two officers showed up,” Delay said. “One was from the Laramie County bomb squad and the other was a Cheyenne police officer. Upon further investigation and digging out the bags, five more were found, making a total of nine.” 

The U.S. Department of Energy’s Office of Scientific and Technical Information defines a slurry explosive as one which “can be initiated by the detonator alone without the use of conventional sensitizers and is free from the deterioration due to time.”

The bags were labeled, and an investigation is ongoing as to how and when they got there. Speculation based upon the manufacture date is that they were manufactured sometime between the ‘60’s and the ’80's, Delay said. 

“They could have been there for a long time,” he said. “We just don’t know yet.” 

Delay said it looked like industrial explosive slurry, but that couldn’t be specifically determined either. At times these mixtures are used in military purposes or for mining purposes. 

“The bomb squad detonated the bags right there in the lake bottom,” he said. “They were discovered about a mile northeast of the Sandy Beach boat ramp.


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