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.
The most authoritative work on the CCC is still that by John Salmond, published in 1967: The Civilian Conservation Corps, 1933â1942: A New Deal Case Study. Also of interest is Stan Cohen's The Tree Army: A Pictorial History of the CCC, 1933â1942, published in 1980.is interest in the CCC began with the stories his father told him of his time in a CCC camp at Wolf Rock, Pennsylvania, in 1933â1934. Speakman is the author of At Work in Penn's Woods: The Civilian Conservation Corps in Pennsylvania, which has been recently published by Penn State University Press.