(a)
Establishment, implementation
The Secretary may establish pilot projects and demonstrations to carry out the purposes of this subchapter. The pilot projects and demonstrations established under this section (1) may be operated by the Secretary; or (2) may be carried out through contracts or agreements with owners of private forest lands or other persons, or in conjunction with projects, contracts, or agreements entered into under any other authority which the Secretary may possess: Provided, That nothing contained in this subchapter shall abrogate or modify provisions of existing contracts or agreements, including contracts or agreements for the sale of national forest timber, except to the extent such changes are mutually agreed to by the parties to such contracts or agreements.