IQ NEWS

摘要

In 2013, production of aggregates in the United States totalled more than 2 billion metric tonnes at a value of $18.6 billion, with the aggregates industry alone employing around 100,000 highly skilled men and women. Every $1 million of stone, sand and gravel sales in the US is supporting more than 19 jobs. Representing the construction aggregates industry in the US is the National Stone, Sand and Gravel Association (NSSGA), which is the world's largest mining association by volume. Its member companies produce more than 90% of the crushed stone and 70% of the sand and gravel consumed annually in the US. With this in mind, the Institute of Quarrying was pleased to be able to maximize the opportunity presented by the NSSGA to deliver a one-hour live webinar in February 2015. The session, which was broadcast to more than 30 locations around the world, covered Geotechnical & Structural Geology, a crucial area in all aspects of quarry operations and essential knowledge for those working in the extractives and processing industries. Areas covered included maximizing reserves, safety and quarry inspections, and design considerations.