• HSE - Quarries - Competence

    Competence. The Quarries ... No one can work in a quarry unless they are competent (or they are under the supervision of a competent person), ...

  • Quarry explosion | Aggregates Manager

    Pennsylvania town dedicates memorial to 31 quarry workers killed in 1942 blast. ... Click here to receive a free digital subscription of Aggregates Manager. Latest.

  • A New Method for Blast Hole Analysis

    A NEW METHOD FOR BLAST-HOLE CUTTING ANALYSIS ... decisions require that the quarry manager has reliable knowledge of rock quality of every open face in the