DCHP-1 Online
skimmings Placer Mining, Obs. 
n. pl. See quote.
- 1881 A fresh supply [of fine gold] comes down every freshet, and forms what is called skimmings, but it is washed out of the banks by the high water.
- 1881 A fresh supply [of fine gold] comes down every freshet, and forms what is called skimmings, but it is washed out of the banks by the high water.