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The latest highlights from the Eastern Gold Zone included 0.7m at 317.53g/t gold, within a wider 8.5m at 30.98g/t from 196m at the High Grade Zone.
Executive chairman Jacques Trottier said each data point was an important input and the company would test its hypothesis that the High and Low Grade Zones potentially merged at depth.
The company added a second drill rig to the expanded programme earlier this month, approving a further 15,000m of drilling to take the total to 25,000m.
The Eastern Gold Zone is one of five targets on the Perron property, with one rig expected to move to the Perron zone about 1.5km away once the road network has dried up following the spring breakup.
Sprott holds 8.5% of Amex according to a company presentation this month.
He acquired C$3 million of the 75c units on offer in a February placement that raised $5.4 million (US$4 million) for exploration at Perron and general working capital.
Amex shares spent most of 2018 below 10c then shot to a high of $1.52 in February following Sprott's backing and a series of high-grade intercepts.
They closed up 3c yesterday to 80c to capitalise it at $43.5 million (US$32.4 million).