The merchantable lumber shall be marked Λ and the refuse lumber shall be marked λ and shall be plainly and durably marked on each piece. Deduction shall be made for splits, not exceeding in any case one-half (½) the extent of the split.
Marking of grades
R.I. Gen. Laws § 2-20-20., under Chapter 2-20 Lumber Surveys.
R.I. Gen. Laws § 2-20-20.