Redcedar bolt explained

Redcedar bolts are relatively small (1 foot x 1 foot x 1 foot is common) cubes of Western Redcedar which are later processed into redcedar roof shingles.^{[1] [2]}

Notes and References

1. Book: Commission, United States Tariff . Red Cedar Shingles: Report to the President Under the Provisisons of Section 3 (E) of the National Industrial Recovery Act. With Appendix: Limitation of Imports . 1935 . U.S. Government Printing Office . en.
2. Book: Commission, United States Tariff . The Red Cedar Shingle Industry: Report of the United States Tariff Commission to the President of the United States Upon the Red Cedar Shingle Industry in the United States and Canada . 1927 . U.S. Government Printing Office . en.