(Los Alamos-AP) -- Personnel cutting trees in a canyon east of Los Alamos have been warned that some trees in the area might be radioactive.
Los Alamos National Laboratory officials have informed the U.S. Forest Service and Los Alamos County not to remove trees cut in certain parts of Bayo Canyon.
Lab spokesman James Rickman says small sections at the bottom of the canyon, formerly known as Technical Area 10, were used from the 1940s until 1961 as test sites by scientists studying explosions.
Rickman says it's not really that there's a risk, but the lab wanted to point that out.
The Forest Service is helping Los Alamos County with thinning projects on county land. The crews are thinning dense ponderosa stands in an effort to reduce the danger of a large-scale fire near the town.
As an added precaution, Forest Service and county crews have opted not to remove any vegetation from the canyon.
They are grinding the trees into mulch.