Gold was discovered in the Moline area by Chinese miners in 1882 with subsequent mining continuing on
an intermittent basis until 1957. There are discontinuous workings down to 90 m below surface and an
exploration drive at the 120 m level. Historical stopes were generally less than 2 m wide and were centered on narrow high grade quartz-pyrite vein mineralization. Underground mining of the high-grade (31g/t Au) oxidized mineralization continued until 1957 produced 35,768oz Au.
Modern exploration for gold and base metal mineralization within the Moline area commenced in the
early 1980s, which led to the definition of three main mineralized trends; namely the Hercules, Moline
and Tumbling Dice trends. The main open pits of Hercules, School, Moline and Tumbling Dice, along with
several smaller satellite pits, which were in operation from 1989 to 1992, occur within MLN1059 at
Moline. The main pits of Northern Hercules and Moline produced
the bulk of the ore and were mined
down to the top of the sulphide zone (60 to 70 m below surface). Substantial mineralization was also
extracted from the School, Four and Tumbling Dice open pits and
from 16 other small, shallow pits
confined to the oxidized zone.
Re-treatment of tailings in 1987
and open cut mining by Moline
Mine Management Pty Ltd from 1988 to 1991 recovered a further 38,257oz Au. Metallurgical problems i
n treating the part-oxidized refractory gold mineralization were the main factor in the mining operation being closed down.