• Markstrom, Donald C.
  USDA Forest Service, Rocky Mountain Forest
  
• Troxell, Harry E.
  College of Forestry and Natural Sciences, Colorado State Univ.
  
• Boldt, Charles E.
  USDA Forest Service, Rocky Mountain Forest
  

Trees from growing stock levels of 20, 60, and 100 in sapling and pole stands were sampled at three vertical positions -- 0, 25, and 50 percent of total height above the 1-foot stump. Wood grown during the 10-year period after thinning was compared for growth and wood properties. Wide differences in radial growth, induced by thinning treatments, were not accompanied by significant differences in specific gravity, latewood percentage, tracheid length, nor microfibril andle. However, all properties except microfibril angle were significantly affected by vertical position on the stem.