Mine to Market November-December 2012 - Mount Isa Mines

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Lady Loretta Breakthroughs Since mining first ore in September, our Lady Loretta project has continued its development full steam ahead. As we went to print, the decline into the underground mine was over 1.3 kilometres long. This equates to a vertical depth of approximately 169 metres, and two different ore access levels. Ultimately, Lady Loretta’s underground operation will reach a depth of 500 metres and is planned to feature 18 levels. Development at Lady Loretta is reconciling closely with the block model. In other words, we are finding ore where we expected to find it. This is testament to the preliminary and ongoing planning work from our geologists, geotechnical engineers and other technical services team members. They have been greatly assisted by four previous feasibility studies undertaken at Lady Loretta and more than 70,000 metres of exploratory drilling. Over the past two months, Lady Loretta reached two key milestones, achieving ‘breakthrough’ at Ventilation Shafts 1 and 2. This means the mine decline which is being developed has now met up with these vertical ventilation shafts 140 metres and 136 metres beneath the earth’s surface. This is a key step in the process of developing Lady Loretta, as the ventilation shafts form part of the mine’s primary ventilation circuit. Breakthrough into Shaft 2 occurred first in mid October, and the team are now in the process of installing temporary ventilation fans to provide fresh air underground. This shaft will also provide an emergency escape ladder-way and additional power, air and water services. Meanwhile, dewatering and refurbishment of Shaft 1 is being finalised. Temporary exhaust fans will be in place underground while works continue on the permanent surface primary fans. Above ground, the Lady Loretta Village continues to grow. With the addition of 66 new rooms, the onsite village is now equipped to house 248 people, catering for employees, long and short-term contractors and the occasional visitor. Kevin Brant, Geotechnical Engineer inspects the point of breakthrough into Ventilation Shaft 2 The Lady Loretta decline meets Ventilation Shaft 1 mine to market 17
Page 1 and 2: No. 126 • November-December 2012
Page 3 and 4: Monitoring air quality in Mount Isa
Page 5 and 6: Record crowds at 2012 Xstrata Lake
Page 7 and 8: Renovating a landmark Community In
Page 9 and 10: Main decline reaches final depth A
Page 11 and 12: Paul Telford General Manager Copper
Page 13 and 14: The EHM 'Operation' themed float in
Page 15 and 16: Johannes Grobler’s Story Sixteen
Page 17: Julia Mansfield, Health Coordinator
Page 21 and 22: Community Cloncurry celebrates the
Page 23 and 24: Martin Zgrajewski’s Story I first
Page 25 and 26: Focus on hydration during Safe Work
Page 27 and 28: Zinc X-Men win battle Xstrata Zinc
Page 29 and 30: During November, like thousands of
Page 31 and 32: Announcements Congratulations to Su

Mine to Market November-December 2012 - Mount Isa Mines

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