Drone view along a pit wall at Big Rush North
Big Rush North, June 2020

Big Rush

Greenvale district, about 200km by road from the hubCIL feed ยท Production Ready

Key facts

Big Rush key facts
LocationGreenvale district, North Queensland, about 200km by road from the hub
StatusProduction Ready
Processing routeCIL feed
CommodityGold
JORC resource153,000 oz Au @ 2.61 g/t
Historical miningOpen pits: Central, Northern, Southern and Sergei
CIL recovery85% in a historic production-scale trial
Exploration lease30,000 ha around the mining leases

Overview

Big Rush, in the Greenvale district, is about 200km by road from the processing hub and is planned as feed for the CIL circuit. It holds a JORC resource of 153,000 oz of gold at 2.61 g/t.

The mine was worked historically by open pit: the Central, Northern, Southern and Sergei pits. About 8,000 oz of gold-bearing ore is already stockpiled on the leach pad.

Only the Central Pit free-gold lode is in the mine plan. The surrounding refractory halo is excluded and untested. Around the mining leases, a 30,000 ha exploration lease hosts nine historical mines.

Highlights

  • 85% CIL recovery in a historic production-scale trial: the trial CIL campaign processed 33,000 t @ 11 g/t Au for 10,000 oz recovered
  • High-grade intercepts beneath the Central Pit: 32m @ 14.0 g/t Au (BR136) and 19m @ 3.51 g/t Au (BR151)
  • About 8,000 oz of gold-bearing ore already stockpiled on the leach pad
  • District upside: nine historical mines on the exploration lease, and a rock chip of 26.64 g/t Au at the Mike Anomaly

Photos, maps and sections

Select an image to enlarge it.

A Big Rush pit and the country beyond, June 2020
Big Rush Central long section, with open targets at depth
Central Pit cross-section 11380N: the high-grade free-gold lode
Drill cross-section: 19m @ 5.11 g/t Au, including 3m @ 21.73 g/t
Drill hole collars and intercepts over the Big Rush pits
Big Rush Mining Leases and exploration permit
The historical leach pad at Big Rush