Kaiser Reef (ASX:KAU) has reported positive assay results from drilling at the A1 Mine, extending high-grade mineralisation.

The company said it's pleased with the results, which give its mining team greater options regarding production.

It also said the drilling targeted near term mining discoveries following a two-month hiatus, and found significant high-grade quartz veins with visible gold in each hole, opening up the potential for new mining areas.

Shares of Kaiser Reef are up 2.44% the past five days.