On April 16, 1921, a grand celebration was held in Susanville for the Fruit Growers Supply Company new mill  that was placed into the operation. In evening, a banquet was held for an assorted of company officials and local dignitaries. Fruit Growers General Manager Frank Hutchens stated how the Lassen would be operated. Fruit Growers would conduct selected tree harvesting, whereby 30 percent of the merchantable trees would remain as seed trees. Fruit Growers and the Lassen National Forest Service were working on a selective harvest plan that would allow to operation to continue in perpetuity. They estimated it would take between fifty to sixty years to log their holdings. By that time, the original logged areas would be ready for the second harvest of mature trees which again would take between fifty and sixty years to harvest, and the cycle could continue.

C.E. Emerson, a local merchant and rancher, told the crowd of his reforestation experience locally. Emerson recalled as a child, forty years ago, he helpd plant a tract of pine trees on the family ranch just south of Susanville on Diamond Mountain. Those seedlings, he said, had become a fine stand of pine timber, many of which were 22 to 24 inches in diameter.