ORS 517.110: Grubstaking contracts.

All contracts of mining copartnership, commonly known as “grubstaking,” shall be in writing, and recorded with the clerk of the county wherein the locations thereunder are made. Unless contracts of mining copartnership contain the names of the parties thereto and the duration thereof, the contracts are void. [Amended by 1991 c.230 §28]

PROSPECTING, SMALL SCALE MINING AND RECREATIONAL MINING