Rarely, other fibres such as paper or wood or asbestos have been used. The polymer is usually an epoxy, vinylester or polyester thermosetting plastic, and phenol formaldehyde resins are still in use. FRPs are commonly used in the aerospace, automotive, marine, construction industries and ballistic armor.
On  March 31, 1933, the U.S. Congress enacted legislation creating the Civilian Conservation Corps (CCC), a Depression-era federal agency. The CCC was one of the New Deal programs initiated in the first one hundred days of Franklin D. Roosevelt's presidential administration.
On 28 June 1937 the Civilian Conservation Corps was legally established, transferred from its original designation as the Emergency Conservation Work program. Funding was also extended for three more years by Public Law No. 163, 75th Congress, effective 1 July 1937. Sherraden, Michael W. Military Participation in a Youth Employment Program: The Civilian Conservation Corps, Armed Forces and Society, vol. 7, no. 2, pp. 227â245, April 1981, pp. 227â245; ISSN 0095-327X available online from SAGE Publications.