"It's a research experiment designed to test mechanical thinning ."
2.
So we need to consider mechanical thinning as well.
3.
What is needed, he says, is some form of mechanical thinning to remove the inflammable basement of brush and young trees.
4.
Congressional critics say federal land managers should rely more on " mechanical thinning "-- using people and machines to cut down trees and undergrowth.
5.
Mechanical thinning projects will outnumber prescribed burning, due to the high risk of fire and a desire to hold down air pollution, he added.
6.
More important, it will greatly increase the mechanical thinning of overgrown forests by removing the smallest, most fire-prone trees while leaving the largest, most fire-resistant ones behind.
7.
The draft, however, essentially eliminates the owl reserves and permits the managers of individual national forests to employ " mechanical thinning " _ timber cutting _ as desired.
8.
By the year 2005, the Forest Service hopes to have begun a program to treat 3 million acres ( 1.2 million hectares ) of forest a year with a combination of mechanical thinning and managed fire.
9.
By the year 2005, the Forest Service hopes to have begun a program to treat 3 million acres ( 1 . 2 million hectares ) of forest a year with a combination of mechanical thinning and managed fire.
10.
"Mechanical thinning " means a $ 900, 000 experiment using chain saws to cut 16, 000 trees _ mostly small ones _ across 80 acres : half on the south rim near Grandview Point, and half on the north rim along Swamp Ridge.
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