What's happening at Angas Zinc? - Terramin Australia Limited · TERRAMIN AUSTRALIA LIMITED Acid...
Transcript of What's happening at Angas Zinc? - Terramin Australia Limited · TERRAMIN AUSTRALIA LIMITED Acid...
TERRAMIN AUSTRALIA LIMITED
What's happening at Angas Zinc?
Safety - In March achieved
12 months without a Lost
Time Injury (LTI)
Emergency Response
Training - new team
members
Hazard reporting continued
to increase
Increased core safety
training
Highest recorded RL (72.34m)
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
Results in March
confirmed presence
of a large copper-gold
mineralisation at
Pipeline
Ongoing geochemical
sampling continues
over regional
prospects
Regional exploration commenced in January
TERRAMIN AUSTRALIA LIMITED
Angas Zinc Mine
Quarterly Environment Report Quarter 1: January -March 2013
M. Daniel
TERRAMIN AUSTRALIA LIMITED
Environmental and Community
Activities
Annual Compliance Report
(formally MARCR) submitted at
requested date
Waste Management Plan -
implemented, waste bays,
recycling
Installation of noise curtains
TSF Rehabilitation trial (soil
moisture probe vandalised,
repaired in April)
Seed Collection - 9 species
throughout the quarter
Rabbit fumigation
Woody Weeds eradication program
Community Interaction - Site tours
CSIRO Double helix club
SACOME Mining for non-miners
SCCC and government regulators
DMITRE Industry and Manufacturing
tour
Green Triangle Activity Group
TAFE SA Indigenous Students
studying mining – presentation and
surface tour
Sponsorships
CLASS
TERRAMIN AUSTRALIA LIMITED
Noise March Monitoring - West results
(Boxcut side)
TERRAMIN AUSTRALIA LIMITED
Noise March Monitoring -East results
(Mill side)
Possible sledge hammer
Wind
Wind
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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
Flexshield Noise Monitoring Locations
a
Mine side of
Grain Mill
Paddock
Residence
Neighbour’s
Home
Boundary towards
Neighbour
1st Level Ball Mill –
3000mm from Mill
TERRAMIN AUSTRALIA LIMITED
Noise - Flexshield Monitoring Data
TERRAMIN AUSTRALIA LIMITED
Noise/ Vibration
14
PPVmax- 0.10 mm/s
7/5/13 00:00 7/5/13 06:00
PPVmax- 0.12 mm/s
Vibration Levels at time of Noise/vibration concern received on the 7th 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
Velo
city
(m
m/s
)
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 25th and 28th of February and
the 5th to the 13th 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 31st of January till the 14th 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
2010
2011
2012
2013
RL - 67.39 at 16th May
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 - 11,807m2 at 67.45RL on the 15th of May
Below 15,000m2 and 68RL
7th
March 2013 TSF Western Wall 15th
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 4th of May 2013
Volume of water in the decant pond has reduced by 219,727m3
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 28th
November 2011 to 2.12m on the 4th of May 2013
Date RL of Tails (m)
Volume of Decant Pond Water (m3)
Total Volume of tailings (m3)
Nov-11 -36.79 239,367 569,000
May-12 -35.85 149,587 606,000
Oct-12 -35.60 159,786 639,830
May-13 -34.64 19,640 677,100
TERRAMIN AUSTRALIA LIMITED
Acid Mine Drainage - Modeled
Surface Area
TERRAMIN AUSTRALIA LIMITED
Acid Mine Drainage - Management
of the TSF Decant Pond
Raw water management
350m3/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 100m3/hr compared to 40m3/hr
Dust suppression- sprinklers and water trucks
RO plants - treating small amounts for internal use
TSF water management
Currently an average of 445m3/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
Further weed and pest management
Vegetation maintenance and
enhancement
TAFE group using Angas as a
training site for rehabilitation
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