The minor cave-in early Wednesday morning was around a box where workers were injecting grout, a concrete-like material, into the tunnel.
No radiological readings above those anticipated were detected, and none of the workers were at risk, according to the Department of Energy.
A PUREX plant tunnel holding eight rail cars loaded with highly radioactively contaminated equipment was discovered partially collapsed on May 9. A sand and soil mixture was poured into the 20-by-20-foot hole the next day……..
Hanford leaders continue to discuss how to address the issue, but DOE said in a statement that it expects grouting to resume soon……http://www.tri-cityherald.com/news/local/hanford/article176975261.html
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