PHOTO: Showing the smaller columnar structure of the Basalt at Smeeds Quarry. Andrew Robertson explains the old blasting practice used in areas where there were...
A government mandate may oblige quarrying companies to supply production details now given voluntarily. Hugh de Lacy examines the issues. Shortcomings in the supply of...
Gavin Hartley from Blackhead Quarries presented his Quarrying Way Down South paper to the Institute of Quarrying Otago/Southland Branch mini conference held in Gore 23-24...