Unico Silver (ASX: USL) has reported a 73% increase in silver equivalent ounces at its Cerro Leon project in Santa Cruz, at time when silver prices are hitting record highs. The company says the increase in the Argentine project’s mineral resources estimate (MRE) to 162 million ounces of silver equivalent is an important milestone as it approaches a global resource of 250Moz silver equivalent. That global resource will benefit further from the inclusion of an upcoming Joaquin deposit MRE, with that asset and its rich silver producing history not included in the latest Cerro Leon MRE update. Unico has confirmed that the high-grade mineralisation at Cerro Leon is open at depth and along strike, and has an additional 30,000m of drilling currently underway. The company has successfully consolidated the Cerro Leon asset into what it now considers is one of the largest undeveloped silver and gold resources in the highly prospective Santa Cruz province.