Mining. Also 8 streke. [f. STRAKE sb.3] trans. To wash (ore) in a strake. Also Gold mining, to concentrate (ore) by means of strakes.
1778. Pryce, Min. Cornub., 233. Throwing aside the poorer part, which is afterwards to be streked and washed.
1839. De la Beche, Rep. Geol. Cornwall, etc. xv. 592. The poorer ores were put aside to be straked.
1882. Rep. Ho. Repr. Prec. Met. U.S., 608. Their plan of concentration being principally what is called ‘straking,’ consisting of a number of fixed inclined trays 30 feet in length.
