DCHP-1 Online
pay gravel Placer Mining 
gold-bearing gravel.
See also: pay dirt (def. 1)
- 1897 What is known as "pay gravel" lies below the bottom of the creeks, and is obtained by sinking a shaft through the frozen ice, mud and debris to the bed-rock, where the richest gravel is encountered.
- 1898 He has prospected several buckets of pay gravel which went $21.
- 1897 What is known as "pay gravel" lies below the bottom of the creeks, and is obtained by sinking a shaft through the frozen ice, mud and debris to the bed-rock, where the richest gravel is encountered.