American CuMo Mining Corporation announced that it has completed its review of all the information gathered during the 2017 drill program conducted at its Calida Gold project. As a result of the Company's assay detailed verification program, it was discovered that there was high variability between individual assays, especially for silver. Also, several assays indicated no precious metals present within the sample where samples were within 20 feet of previous historical samples containing precious metals. As a result of these discrepancies, upon completion of the drill program and the receipt of all assays, including checks and duplicates, the company submitted seven core samples for microscopic analysis to Vancouver Petrographics Ltd. of Langley, BC. The results of the analysis indicate two major points: Native silver was observed in samples that assayed low-grade silver and A large portion (60 to 90%) of the copper-bearing sulphides were completely replaced by iron oxides. The company has determined that the assay variation was due to a 'nugget effect' created by the irregular distribution of the precious metal grains in the samples, such that taking a standard 50-gm assay split from 8 to 15 kg samples was not representative of the precious metal (Au and Ag) contained in the sample. Also, it should be noted that the results revealed that this is a fine-grained effect, and therefore standard techniques, such as metallic assays, are not applicable. Having established the presence of precious metals in the samples, the Company then submitted an entire sample from one of the better intersections to Process Mineralogical Consulting Ltd. of Maple Ridge, BC for detailed metallurgical analysis. The results from this sample indicated the presence of twelve (12) fine grains of native gold, ten (10) grains of Electrum, a naturally occurring alloy of gold and silver with trace amounts of copper and other metals, (average 75.4% gold, 24.6% silver, ranging from 61 to 93% gold) and 4 grains of native silver. The observed gold grain size was below 8 microns, with the majority reporting to the minus 38-micron fraction. 12% of the copper grade reported as sulphide.