‖ torta Mining.
(ˈtorta)
[Sp. torta: see next.]
One of the large flat circular heaps or ‘cakes’ of ore spread upon the floor or patio (patio 2) in the Mexican amalgamation process.
| 1839 Ure Dict. Arts 1119 The patio, or amalgamation floor..is capable of containing 24 tortas, or flat circular collections of lama, of about 50 feet diameter, and 7 inches deep. 1881 Raymond Mining Gloss., Torta, a flat heap of silver ore (slime or pulp) prepared for the patio process. |