The deal, valued at up to $1.09bn (C$1.53bn), was announced in September.
BGR will offer Eclipse strategic counsel and support in engaging with the US administration, federal agencies and the US Congress.
The drilling programme will include roughly 3,000m of NQ-diameter diamond drilling from surface.
Historic drilling and mine records indicate that the gold-silver-bearing Pierina vein extends below the 4090 level.
The Red Basin project consists of 86 lode claims located in the Datil Mountains in the Pietown Uranium District of Catron County.
