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TriMetals Mining Reports Results of Column Leach Tests from Jumbo Target at Gold Springs Project
VANCOUVER, BC--(Marketwired - November 02, 2016) - TriMetals Mining Inc. (TSX: TMI) (TSX: TMI.B) (OTCQX: TMIAF) (OTCQX: TMIBF), (the "Company"), is pleased to a
About this update from Gold Springs Resource Corp.
[{"type":"text","content":"VANCOUVER, BC--(Marketwired - November 02, 2016) - TriMetals Mining Inc. (TSX: TMI) (TSX: TMI.B) (OTCQX: TMIAF) (OTCQX: TMIBF), (the \"Company\"), is pleased to announce the results of 3 full size cyanide column leach tests on Jumbo mineralization, the largest resource block, located in the Utah portion of the project. The metallurgical tests were conducted over a long period of time to look at extraction rates over the short term and long term after a \"rest period\" in which no additional cyanide solution was applied. The results suggest that higher recoveries than those used in the PEA may be possible both in gold and silver. Final Extractions are shown below: Final Extraction* Calculated Head Grade Column Gold % Silver % Gold g/t Silver g/t #1 94.3 34.3 1.09 24.3 #2 66.9 53.4 0.54 20.6 #3 81.9 59.8 0.23 11.9 *extractions after 157 days of leaching and 125 days of rest Ralph Fitch President and CEO, stated, \"These results are confirmatory of the gold recoveries used at Jumbo in the 2015 Preliminary Economic Assessment (PEA) (NR 15-10 of August 12, 2015) with clear increases in expected silver recoveries. The overall recovery at Jumbo used in the PEA was 73% for gold and 40% for silver. The PEA sensitivity analysis indicates that every 10% increase in gold recovery increases the net present value of the project by approximately $30 million. These results, which represent 3 of the 5 types of mineralized materials at Jumbo used in the PEA represent 73% of the deposit.\" The three columns covered a wide range of grades varying from 1.09 g/t to 0.23 g/t gold, with good recoveries even from the lower grade material. Approximately 22 kg of each type of mineralized material, crushed to a P80 of ¾ inches, were loaded into 4-inch diameter columns approximately 6 feet high. Column Type of Material Description 1 J1 oxidized quartz sericite pyrite Alteration 2 J3 quartz veins and breccias with >40% Vein material 3 J4 stockwork veining Final Extractions over time are shown below: 43 day Extraction 84 day Extraction 282 day Extraction after rest period* Calculated Head Grade Column Gold % Silver % Gold % Silver % Gold % Silver % Gold g/t Silver g/t 1 90.1 25.3 90.6 28.4 94.3 34.3 1.09 24.3 2 62.5 35.4 62.5 43.3 66.9 ...