MegumaGold Drilling Defines New Gold Halo at Killag Project - Seite 4

MegumaGold 2019 RC Drilling Program Sampling and QAQC Protocols

Reverse circulation drill chip field samples measuring 1 m in downhole length and approximately 2.5 kg in mass were obtained through rotary splitting at the drill site. Field samples were assigned for processing by either screen metallics methods or regular assay methods on the basis of percentage of recorded quartz. Samples selected for regular assaying were submitted to the Minerals Engineering Center (MEC) at Dalhousie University, in Halifax, Nova Scotia, for crushing and subsequent pulverization to create >80% passing 200 mesh pulp material. Pulp material was riffle split to produce a 100 g subsample that was sent by commercial carrier to ALS Canada Ltd. (ALS) in Sudbury, ON  for processing, with subsequent gold analysis at that firm’s Vancouver, BC facility by Fire Assay – Atomic Absorption (FA-AA) methods using a 30 g pulp split. Multi-element analysis of specified pulp samples was also carried out at ALS.  Samples selected for screen metallics processing were shipped by commercial carrier to Eastern Analytical Limited (Eastern) in Springdale, NL for crushing to -10 mesh followed by pulverization to 95 % passing -150 mesh. 
The plus 150 mesh fraction and one 30 g split of the minus 150 mesh fraction were separately analysed for gold using standard FA-AA methods and a mass-weighted average of results for the two analyses was recorded as the gold grade for the sample. Archived splits from certain samples analyzed initially at ALS that returned anomalous gold levels were submitted to Eastern for screen metallics processing using the same method.  

MegumaGold’s Quality Control and Quality Assurance (QAQC) protocol for RC samples includes (1) field measurement of sample split weights, (2) blind insertion of certified reference materials at 1 in 40 frequency, (3) blind insertion of blank samples at 1 in 40 frequency, and (3) analysis of duplicate pulp  splits at 1 in 40 frequency. QAQC samples are inserted/analysed in offset sequences. Both ALS and Eastern are independent, commercial analytical services firms registered to ISO 17025 and accredited by the Canadian Association for Laboratory Accreditation Inc. (CALA). MEC is an independent, analytical services laboratory operated by Dalhousie University that provides analytical and metallurgical processing services to commercial and academic clients. All laboratories have internal QAQC protocols that include analysis and results monitoring for certified reference materials, blank samples and duplicate split samples. MEC has an internal QAQC protocol that applies specifically to sample preparation parameters of the MegumaGold program. Results of all QAQC programs were continuously monitored by MegumaGold and acceptable results were received for all analytical work associated with this press release.