The original work on the New Jerusalem was done before 1900. This included surface stripping and underground stoping and an adit crosscut. A raise from the crosscut to the surface workings was driven in 1937 and 1938. Ore was mined from the raise in 1951 and 1952. Ore production is recorded for 1907 (17 tonnes) and 1952 (223 tonnes) totalling 240 tonnes. From this, 22,426 grams of silver, 249 grams of gold, 38 kilograms of cadmium, 16,226 kilograms of lead and 5,674 kilograms of zinc were recovered.

The main vein of the New Jerusalem is in a fine-grained hornblende schist of the Permo-Triassic Kaslo Group. It has a with a well-developed foliation dipping 20 to 25 degrees west. A lenticular quartz vein which strikes 290 to 300 degrees and dips 75 degrees to the south contains galena, sphalerite, minor chalcopyrite, pyrite and pyrrhotite. The vein is up to 1 metre thick with lenses and clusters of medium to coarse-grained sulphides 15 to 20 centimetres thick. Vugs and comb structures are common. The vein is exposed on surface for about 100 metres and has been mined for half this length. Where exposed in the drift about 30 metres below surface, it is only 30 centimetres or so thick and poorly mineralized.