Cobar Consolidated Resources (CCR) has announced the resignation of General Manager Operations, Grant Davidson.

A statement from the company said Mr Davidson had resigned "for personal reasons".

"Grant has tendered his resignation, which has been accepted," CCR managing director Ian Lawrence said.

"On behalf of the Board I thank Grant for his contribution over the past year, overseeing construction and commissioning of the Wonawinta Silver Mine."

A search for a replacement has begun. In the meantime, Mr Lawrence will assume responsibility for the role.

The company said there would be a transition period of about three months during which Mr Davidson would work from the company's Melbourne office to finalise some projects.

The company is currently using a hired crusher to reduce oversize clay lumps before ore is fed to a log washer. It plans to install a mill to eliminate material that's too big, and to install a permanent crusher to replace the hired crusher.

Cobar Consolidated Resources poured its first silver bar at the Wonawinta project on July 12, 60 weeks after development consent was obtained and construction of the project began. The following month it advised of the first silver shipment of 515kg of the metal from the Wonawinta Silver Mine.