It also said it had mining development on the NV1, NV2, NV4, EV2, EV4, JL2 and JL3 gold-bearing veins.
Exploration in 2013 and 2014 drilling had shown these veins to be consistent structures and correlated well with artisanal workings.
The development is to be done in eight drives, with additional drives starting as the mine's infrastructure is upgraded with a large compressor, generator and separation plant, reaching full mining capacity in about three-month's time.
Crater Gold's exploration director Peter Macnab said the company was planning to start haulage drives, enabling it to explore and exploit the southern extension of the HGZ.
"The company's HGZ underground exploration development which is at 1960RL (1960m above sea level) is located in the base of the spur beneath the 2005 to 2013 artisanal mine workings that recovered an estimated 15,000 ounces of gold by very simple mining and processing methods and that the structures being mined by the artisanal workers were open ended down dip," he said.
"The company is prioritising locating the downwards extensions of the high grade shoots and their connecting structures in order to stope upwards on them and efficiently extract between the 1960RL level and the surface.
"The nature of mineralisation localised by intersecting fracture sets such as the HGZ is such that additional high grade shoots and splays not located by the local miners can be expected to be identified in the course of exploration and mining."