So if I understand this well, they are only measuring the core of the veins and like that they reach much higher average grades similar to what they are mining right now: 3.4 g/t gold and 190 g/t silver.
Also the potential of up to 27.9 tonnes of silver and gold is of the same high grade composition of 3.4 g/t gold and 210 g/t silver. This is 10 times today's M+I.
At least it clarifies what they can mine economically at today's prices and like that may take away rumours that the reserves could not be economically exploited.