December 2015
VIEW

December 2015
The latest CRIRSCO developments
Reviewing the achievements of a growing international body that ensures best practice in the minerals industry The Joint Ore Reserves Committee (JORC) is a founding member of the Committee for Mineral Reserves International Reporting Standards (CRIRSCO), which was formed in 2002. In fact, AusIMM and JORC members have played significant roles in CRIRSCO’s development, starting with the late Norman Miskelly, who was the driving force at its inception and the Founding Chairman. Pat Read More
December 2015
Ore Reserve estimates and changes in commodity price – a survival guide
Understanding price fluctuations and implementing best practice in Reserve estimation Volatile commodity prices present particular challenges for Competent Persons and companies and their obligations to keep the market informed. One of the hot-topics from the recent Monograph 30 Roadshows was the influence of recent swings in commodity price. In extreme cases people asked ‘does the Ore Reserve estimate still exist?’ and we heard a paper from Michael Creech where he presented a study of Read More
December 2015
Proactive air environmental management for mines
Making environmental management more efficient and cost-effective In recent years, there has been a rapid adoption of proactive environmental management at mines and related industries such as ports. These have been driven by governmental requirements, new environmental standards, public awareness, changing technologies and cultural shifts in the mining industry. An example is seen in Queensland, where new ambient air quality standards for particulate matter with a diameter less than ten Read More
December 2015
Social impacts of the closure of Century mine
Identifying opportunities to leave a sustainable socio-economic legacy A major challenge for today’s resource companies is ensuring a positive legacy when a mine closes. MMG is confronting the challenge this year with the end of open-cut zinc production at Century mine in the Gulf of Carpentaria, north-west Queensland. MMG, which acquired Century in 2009, is the fourth owner of the mine since production commenced in 1999. The operation has been a major economic force in the Lower Gulf Read More
December 2015
Improving production cost-efficiency at Middlemount through cast-doze
Focusing on precision and efficiency to yield the best results and value The Middlemount coal mine, 90 km north-east of the mining town of Emerald in Queensland’s coal-rich Bowen Basin, is an open cut operation operated by Middlemount Coal Pty Ltd – a joint venture between Peabody Energy and Yancoal. The mine produces low-volatile pulverised and low-phosphorous semi-hard coking coal for export markets. Mining operations consist of truck and excavator strip mining augmented by cast blasting Read More
December 2015
Book Review: Mining in Ecologically Sensitive Landscapes
Valuable orebodies sometimes occur in ecologically sensitive landscapes, where any disturbance results in large and rapid changes in ecosystem condition, function or biodiversity. The desire to obtain mineral resources consequently conflicts with the desire to maintain valued ecosystem attributes. Mining in Ecologically Sensitive Landscapes examines situations, principally in Australia, where the extraction of iron, uranium and bauxite have posed challenges for the maintenance or Read More