§ 3851.1 - Assessment work requirements.

(a) The assessment year begins at 12 o'clock noon on September 1st and ends at 12 o'clock noon on the following September 1st.

(b) All lode and placer mining claimants shall have performed, or caused to have been performed, not less than $100 of labor or improvements upon each lode or placer claim held by the claimant for each assessment year following the assessment year of the lode or placer claim's location.

(c) Where a group of lode or placer claims are held in common, and cover the same mineral deposit, the assessment work may be performed on one or several claims of the group, as long as the aggregate expenditure totals not less than $100 per claim, and the work performed or improvements made will benefit the development of the claim block as a whole.