The 'E.P.U.' claim (E Pluribus Unum (lot 3253)) is 1.2 kilometres east of Greenwood at the elevation of 991 metres. Access is via the Bay mine (082ESE005) which adjoins to the east.

Production from the 'E.P.U.', in the period 1903 to 1905 and in 1915 and 1947, totals 571 tonnes of ore which yielded 44.6 kilograms of gold, 229.5 kilograms of silver, 7.6 tonnes of lead, and 1.1 tonnes of zinc. Approximately one half of this production was achieved in 1905.

By 1913 a gold bearing quartz vein, 15 to 30 centimetres wide, had been developed by a shaft 60 metres deep and shipments of ore, aggregating several thousand dollars, had from time to time been made. The bottom of the shaft shows a strong vein, but the values are quite low. At this point it was decided to run a crosscut tunnel to tap the vein at depth. At the time, the property possessed a hoist, pump, and steam drill capable of sinking at least 120 metres. Capital for the driving of the tunnel was supplied by a complicated share system, partly cash and partly work. The tunnel was first driven about 70 feet in a direction nearly parallel to the vein; then, from a point about halfway in the tunnel, another crosscut was started at an angle of about 35 degrees to the former; the tunnel then twists and turns. The vein, as exposed at surface, is in granite, while the tunnel, which is 520 metres long is entirely in metamorphic rocks. A few felsic dikes, probably apophyses from the main body of the granite, are seen in the tunnel.

The last production from 'E.P.U.' was in 1947. Restoration of 60 metres of collapsed tunnels at this time allowed mining of a faulted remnant of the vein below the bottom level.

There are no ore reserve estimates available for this property.