ppl. a. (UN-1 8.)

1

a. 1849.  Poe, E. B. Browning, Wks. 1865, III. 404. The reader will suffer the most valuable ore to remain unmined to all eternity, before [etc.].

2

1895.  Chambers’s Jrnl., XII. 629/1. The coal in the country still unmined.

3