At the ZZ 23 showing, a short adit has been driven at 058 degrees just below a rock cut which exposes a fracture stained with malachite and chrysocolla across about 5 centimetres. The fracture strikes 125 degrees and dips vertically. Hostrocks are purplish andesite agglomerate of the Eocene Kamloops Group. About 750 metres south-southeast malachite occurs in a calcite or ankerite-filled fracture in an andesite agglomerate.

In 1969, a soil geochemical survey over 55.5 line kilometres was conducted by Grandeur Mines Ltd. over the ZZ claims. In 1970, a soil geochemical survey and 91.4 kilometres of ground magnetic survey were completed on the ZZ and Last claims on behalf of Ensbrook Mines Ltd. and Grandeur Mines Ltd. In 1972, 27.7 kilometres of grid lines were cut on behalf of Rayore Mines Ltd. on the Last and ZZ claims and geological mapping, soil sampling (48), two diamond-drill holes totalling 324.3 metres and four percussion-drill holes totalling 365.7 metres were completed. Also in 1972, geological mapping was conducted on part of the ZZ and Will claims on behalf of Horseshoe Mines Ltd. In 1974-75, geological mapping and a soil geochemical (907) survey was conducted on the ZZ and Will claims on behalf of Horseshoe Mines Ltd. In 1977, a topographic map was prepared for China Commercial Corporation Ltd. on parts of the ZZ and Will claims. In 1978-79, two diamond-drill holes totalling 182.1 metres was drilled on the ZZ 18 and 7 claims on behalf of China Commercial Corporation. In 1981-82, a drillhole (79-1) drilled in 1979 and deepened in 1980 was deepened from 159 to 222 metres in 1980 and again from 222 metres to 253 metres in 1981 on behalf of China Commercial Corporation.