NVRO Metals completes 202-hour continuous production demo on Hecla Greens Creek tailings

NVRO Metals completed a 202-hour continuous production demonstration on Hecla Greens Creek tailings, following 57.5 hours of commissioning.

The campaign achieved about 97% sulfide oxidation, supporting continuous operation under representative conditions consistent with its IDEAS digital model.

Leaching cut solids mass by about 70%, lifting silver grade to 1,795 g/t from 169 g/t, an upgrade of about 10.6x.

Gold grade rose to 16.3 g/t from 1.51 g/t, an upgrade of about 10.8x, based on preliminary operating results.

Independent lab assays and full metallurgical reconciliation remain in progress; work continues on a proposed 35,000t commercial trial evaluation.