A Net Smelter Return ("NSR") model was used to estimate the revenue of the mineralized material. Preliminary process recoveries, doré grades, smelting and refining terms, and transportation costs were assumed to determine the NSR value. A Cut-Off Value ("COV") was used to flag material by whether the revenue in a block exceeds the costs of extraction and processing of that block. There were three COVs used to assess mining at Panuco: An Elevated COV, a Fully Costed COV and the Marginal COV. In accordance wi ...