Rock mechanics in the investigation and construction of Tumut 1 Underground Power Station, Snowy Mountains, Australia

Plate 3. – Photomicrographics
(a) Polished sectiion of Boomerang Creek gneiss; (b) polished section of Happy Valley granite;
(c) thin section of Boomerang Creek gneiss, crossed nicols; (d) thin section of Happy Valley granite,
crossed nicols