GWA Group Ltd V.GWA

Windfall

[Tim2Agami]

Perhaps we can hope for the same style of results as had by Osisko at Redstone Mill

(Toronto, June 11, 2019) Osisko Mining Inc. (OSK:TSX "Osisko" or the "Corporation") is pleased to provide new results from the ongoing exploration program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Qubec.

Results from processing 5,500 tonnes mined from Zone 27 (the “bulk sample”) have exceeded expectations, returning an average grade of 8.53 g/t Au. The bulk sample average grade is 26% higher than predicted by infill drilling on the resource block model. Mining of the bulk sample has successfully confirmed the presence of mineralization predicted in the resource model, and the analytical results have confirmed the visual mineralization encountered along the stope.

The bulk sample test was performed at the Northern Sun Redstone concentrator at an average throughput of 30 tonnes per hour. Processing produced gravity and flotation concentrates.

Ore transportation trucks were sampled for moisture and weighed on a calibrated weight scale. The sample material was crushed and milled to a particle size favorable to the flotation recovery process. Gravity and flotation concentrates produced were weighed and sent to a local smelter for sale.

Daily composite samples of streams for the reconciliation process were prepared and analyzed by an external independent lab. Concentrate production tonnage and assays were used to reconcile the bulk sample mass balance process in the concentrator. The reconciliation was performed by an external independent consultant using Bilmat (a reconciliation software) on a dry tonnes basis.

https://s1.q4cdn.com/975583568/files/doc_news/2019/06/OSK_Bulk-Sample-announcement-june-11-2019.pdf

https://northernsunmining.ca/Redstone-Mill/Redstone-Mill-Overview/default.aspx