What's happening at Angas Zinc? Safety - In March achieved 12 - PowerPoint PPT Presentation

What's happening at Angas Zinc?  Safety - In March achieved 12 months without a Lost Highest Time Injury (LTI) recorded RL (72.34m)  Emergency Response Training - new team members  Hazard reporting continued to increase  Increased core safety training TERRAMIN AUSTRALIA LIMITED

Mining and Processing (Quarter 1, 2013)  Underground development has advanced to over 11km  Development progressing on the 360 metre level  A total 93,989 tonnes of ore was processed  10,827 tonnes of zinc concentrate  4,730 tonnes of lead copper concentrate  Exploration result from underground has resulted in approval of development of the 380mL TERRAMIN AUSTRALIA LIMITED

Near Mine Exploration TERRAMIN AUSTRALIA LIMITED

Regional Exploration  Regional exploration commenced in January  Results in March confirmed presence of a large copper-gold mineralisation at Pipeline  Ongoing geochemical sampling continues over regional prospects TERRAMIN AUSTRALIA LIMITED

Angas Zinc Mine Quarterly Environment Report Quarter 1: January -March 2013 M. Daniel TERRAMIN AUSTRALIA LIMITED

Environmental and Community Activities  Community Interaction - Site tours  Annual Compliance Report (formally MARCR) submitted at  CSIRO Double helix club requested date  SACOME Mining for non-miners  Waste Management Plan -  SCCC and government regulators implemented, waste bays,  DMITRE Industry and Manufacturing recycling tour  Installation of noise curtains  Green Triangle Activity Group  TAFE SA Indigenous Students  TSF Rehabilitation trial (soil studying mining – presentation and moisture probe vandalised, surface tour repaired in April)  Sponsorships  Seed Collection - 9 species  CLASS throughout the quarter  Rabbit fumigation TERRAMIN AUSTRALIA LIMITED  Woody Weeds eradication program

Noise March Monitoring - West results (Boxcut side) TERRAMIN AUSTRALIA LIMITED

Noise March Monitoring -East results (Mill side) Possible sledge hammer Wind Wind TERRAMIN AUSTRALIA LIMITED

Noise  Noise/vibrations concerns from one resident.  Ongoing regular discussions attempting to identify and resolve these issue  Analysis of noise and vibration data  Consultant from a noise mitigation strategies company (Flexshield) came to site in December 2012 measuring noise around and off-site to determine the main source of noise TERRAMIN AUSTRALIA LIMITED

Flexshield Noise Monitoring Locations a Neighbour’s Home Boundary towards Neighbour Paddock Residence 1 st Level Ball Mill – 3000mm from Mill Mine side of Grain Mill

Noise - Flexshield Monitoring Data TERRAMIN AUSTRALIA LIMITED

Noise/ Vibration PPVmax- 0.12 mm/s Velocity (mm/s) PPVmax- 0.10 mm/s 7/5/13 06:00 7/5/13 00:00  Vibration Levels at time of Noise/vibration concern received on the 7 th of May  AS2187.2 Vibration limit - 5mm/s  Walking - 1mm/s  Jumping - 7mm/s  Average vibration for a stope blast - 1.5mm/s  Max during time (00:00 - 06:00) of concern - 0.12mm/s  Noise data has been forwarded to the EPA 14 TERRAMIN AUSTRALIA LIMITED

Hi-volume samplers  Exceedance on the 4th of January over the PEPR criteria  SA Environmental Pollution Monitoring Services investigated the exceedance;  Dust contained low lead levels Wind speed 5-10 m/s  Wind direction (north to west)  High levels not recorded at western unit  Non-mine related dust TERRAMIN AUSTRALIA LIMITED

Blasting  No complaints regarding blasting during the quarter  Monitors were calibrated during the quarter and replaced by the roving monitor  All monitors are now operational  No data was recorded during the 25 th and 28 th of February and the 5 th to the 13 th of March due to issues with the solar panel resulting in battery failure (roving monitor)  Problem with the sensor at the Glover paddock monitor resulted in invalid data from 31 st of January till the 14 th of March  SAROS are currently installing an alarm system to raise an alert when unusual data inputs occur TERRAMIN AUSTRALIA LIMITED

Acid Mine Drainage - TSF Decant Pond RL RL - 67.39 at 16 th May 2011 2010 2012 2013 TERRAMIN AUSTRALIA LIMITED

Acid Mine Drainage - TSF Decant Pond Surface Area  Surface area- now measuring weekly through visual inspection (photo and GPS points)  Current surface area - 11,807m 2 at 67.45RL on the 15 th of May  Below 15,000m 2 and 68RL 7 th March 2013 TSF Western Wall 15 th 2013 May TSF Western Wall TERRAMIN AUSTRALIA LIMITED

Acid Mine Drainage - Surface Area TERRAMIN AUSTRALIA LIMITED

Acid Mine Drainage - TSF Decant Pond  Beach survey undertaken on the 4 th of May 2013  Volume of water in the decant pond has reduced by 219,727m 3 since November 2011  RL of the tails has increased by 1 meter - at the decant chute  Water depth at decant chute reduced from 8.94m on 28 th November 2011 to 2.12m on the 4 th of May 2013 Volume of Decant Total Volume of Date RL of Tails (m) Pond Water (m3) tailings (m3) Nov-11 -36.79 239,367 569,000 May-12 -35.85 149,587 606,000 Oct-12 639,830 -35.60 159,786 May-13 677,100 -34.64 19,640 TERRAMIN AUSTRALIA LIMITED

Acid Mine Drainage - Modeled Surface Area TERRAMIN AUSTRALIA LIMITED

Acid Mine Drainage - Management of the TSF Decant Pond  Raw water management  350m 3 /day sent underground for use in the underground drill rigs  Re-injection of filtered water  Increased feed capacity of the filtration plant (replaced the Osmoflo UF) which can treat 100m 3 /hr compared to 40m 3 /hr  Dust suppression- sprinklers and water trucks  RO plants - treating small amounts for internal use  TSF water management  Currently an average of 445m 3 /day of water is used within the process plant  Enhanced evaporation - sprinklers  Paste fill  V2 - contingency for high rainfall events TERRAMIN AUSTRALIA LIMITED

Community feedback & environmental incidents  3 registered community complaints  Two from one resident regarding noise at night- – noise curtains installed – house visit – noise monitoring conducted at the house  Local resident complained about work conducted on Good Friday- did not leave details  2 internal environmental events recorded  Turtle found in process pond  Oil spill identified on road verge adjacent to the eastern paddock fenceline TERRAMIN AUSTRALIA LIMITED

Upcoming Activities for Q2 2013  Drainage and sediment drain upgrades  Continued removal of historic waste  Seeding of native plants on 6ha of the eastern paddock for SEB requirements  Rehabilitation of the historic landfill  Further weed and pest management  Vegetation maintenance and enhancement  TAFE group using Angas as a training site for rehabilitation TERRAMIN AUSTRALIA LIMITED