TESTING OF THE MINERAL CRITERION IN A GROUP TEST

ERPROBUNG DES MINERALKRITERIUMS IN EINEM RINGVERSUCH

THE MINERAL CONDITION OF 14 SAMPLES IS TO BE DETERMINED AND EVALUATED STATISTICALLY AT 5 INSTITUTES. MATERIALS SAMPLED WILL BE 4 GRAVEL SANDS, 4 CRUSHED ROCK SAMPLES, 3 REFINED CRUSHED SANDS AND 3 STONE DUSTS. WITHOUT THIS GROUP ANALYSIS THE "MINERAL CRITERION" CANNOT BE ACCEPTED IN STANDARDS. SAMPLING IS BEING CARRIED OUT BY DR EPPENSTEINER IN CONSULTATION WITH THE MAPAG, WHO ARE ALSO DEALING WITH THE PREPARATION AND HOMOGENISATION OF THE SAMPLES AND THEIR DISTRIBUTION. AFTER PRELIMINARY TESTS HAVE BEEN UNDERTAKEN A UNIFORM TESTING METHODOLOGY WILL HAVE TO BE ESTABLISHED. FOLLOWING THIS THE GROUP ANALYSIS WILL BE CARRIED OUT.