Veris") to process Pinson's ores in 5,000 ton or greater lots, providing an outlet for mixed ore
(combinations of oxide and sulfide ore) and allowing Atna to decrease expected invested working capital.
Langbeinite is mined from our East Mine, and is a mixed ore
body containing both potash and langbeinite.
Arvada, Colorado) on each of the oxide, sulfide and mixed ore
zones to determine metallurgical recovery rates and amenability of the mineralized zones to heap-leaching with SX/EW recovery of copper, and conventional mining, milling, flotation and concentration.
It also includes our belief that the Cieneguita property has 350,000 ounces of gold resources of which 100,000 ounces of gold resources are in the oxide and mixed ore
In the mixed ore
atmospheric leach circuit, copper leach extraction could be improved by up to 30% depending on the proportion of transition sulphide minerals in the mixed ores
through the provision of heated acid and ferric sulphate ions from the autoclave effluent.
Miramar expects overall recovery of 88% from this mixed ore
The initial mining operation will focus on extracting and processing, by heap leach, the oxide and mixed ore
555 grams of gold per tonne and 206 million tonnes are sulfides and mixed ore
Composite Type Recovery Au(i) Recovery Ag(i) Oxide ore 78% 45% Mixed ore
70% 50% Sulfide ore 59% 59% (i) presumed 100% passing -3/8 inch crush
0 million tonnes per year of oxide and mixed ore
The plant last operated between May and October 1998 and processed high grade mixed ore
This improvement is primarily a result of the drilling program executed since early 1998, the updated geological interpretation derived from this additional information, the reassaying of the silver sampling information and the addition of mixed ore
based on metallurgical testing.