Relevant Links and Technical Papers
www.ioqnz.co.nz (Institute of Quarrying New Zealand)
www.aqa.org.nz (Aggregate & Quarry Association)
www.exito.org.nz (The Extractive Industries Training Organisation)
www.nssga.org (NSSGA is the National Stone, Sand and Gravel Association, United States)
www.quarrying.org (Institute of Quarrying websites - international)
