Acitivity Report for Quarter Ended 30 September 2015
Released
Released
Announcement PDF
QUARTERLY REPORT
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PERIOD ENDING 30 SEPTEMBER 2015
Hillgrove Resources Limited (ASX: HGO) reports for the quarter ended 30 September 2015
HIGHLIGHTS
Production of 4,157t contained copper in concentrates from the Kanmantoo Copper Mine for
the quarter.
C1 cost for the quarter of USD2.18/lb ($3.00/lb) despite treating significant volumes of
stockpiles with high attributed costs (non-cash).
The cut-back of the Giant pit continued to plan, with increases in copper production anticipated
from the first quarter of 2016.
Problematic Emily Star, Nugent and Valentine satellite pits are now complete and backfilling
has commenced in Nugent and Valentine, providing an additional short haul option.
Two CPS campaigns during the quarter processed 221kt of oxide/transitional ore to produce
934t of copper. Targeted tails grade was repeatedly achieved, but feed grade of CPS stockpiles
was lower than anticipated.
Quarterly mining costs at a record low of $10.90/bcm and quarterly processing at a near low of
$5.80/t
Record plant throughput set for the fourth quarter in a row (at an annualised rate of 4.5mtpa).
Hillgrove has agreed to amended contract terms with its mining contractor to reduce costs during the
cutback period and remove price escalation effective from the start of the September quarter, with
the contract now extended by two years.
Hillgrove’s copper hedging continues to support the revenue stream, with significant hedge
book cover to December 2017 (20.7kmt of hedging at an average price of $7,707/t, above the
current spot price of $7,168).
As at 30 September 2015, cash on hand was $8.9 million, total debt increased from $18.2
million to $20.0 million (due to the depreciation of the AUD/USD exchange rate) and net debt
stands at $11.1 million.
A comprehensive review by external consultants has resulted in a new Planning model to
deliver more copper metal and an increased NPV, but with less metal in the upper areas which
are currently being mined and more metal in the heart of the orebody. Copper metal production
for FY15 is now projected to be 17,500t to 18,500t with gold expected to be higher at 5,500oz to
6,500oz. C1 cash costs remain within guidance.
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HILLGROVE RESOURCES LIMITED ACN 004 297 116
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HILLGROVE RESOURCES LIMITED ACN 004 297 116
EXECUTIVE SUMMARY
There was a significant improvement in safety during the quarter, with a record
period free of total recordable injuries. Copper production was 4,157t copper in
concentrate, at a C1 cash cost of USD2.18/lb ($3.00/lb). The Giant pit cut back
continues on plan and cash on hand remains steady at $8.9M.
Geological performance over the past year continued to prove challenging in historic
stockpiles, upper levels of the cut back and satellite pits. It was for this reason that
an independent review was conducted to validate the quality of the models used.
This review showed that the learning of the last eighteen months is that the satellite
pits and upper areas were less continuous and had different attributes to the heart of
the main orebody which was found to significantly outperform. Looking forward, this
has meant that whilst there is less copper in the near term resulting in a marginal
lowering of copper production guidance for FY15, overall there are more copper
tonnes and an increase in NPV for the current PEPR approved period to 2019.
Mining costs have reduced to an all-time low and another processing rate record was set. Looking forward, the
mine plan will be amended to deliver copper metal in line with previous forecasts. Whilst ore hardness will
increase and mill throughput will reduce, costs will continue at lower than original projections. Corporate
activities have been simplified and a number of positions consolidated, including the CFO & Company Secretary
being combined into one position. The intent is to deliver better than a 40% cost saving in Corporate by mid2016.
As expected it has been a challenging quarter, but we continue to fund the Kanmantoo mine including the Giant
Pit cutback through cashflow from operations. Revenue for the quarter was $34.3 million at an average realised
price for copper of $3.53/lb (USD2.69/lb), with cash on hand at quarter end of $8.9 million. These revenues
were supported by Hillgrove’s strong hedge book. This hedge book will continue to provide Hillgrove with strong
revenue protection, with 20.7kt of hedging at an average price of $7,707/t ($3.50/lb), amounting to
approximately 75% of payable copper until March 2016 and 42% of payable copper from April 2016 until
December 2017 still available.
With an increase in NPV of the Project, strong exploration potential to the north and the extension of the
simplification and consolidation across the entire Company, the future looks very positive for HGO. Prudent cash
management during the cut back, then increased copper production and exploration activity during 2016 will lead
to a significant cash generating phase from 2017.
The Company’s Indonesian exploration projects at Sumba and Birds Head continued on a care and
maintenance basis, with a review of these assets currently being undertaken.
KANMANTOO COPPER MINE, SOUTH AUSTRALIA
Mining Lease 6345 (Hillgrove 100%)
Overview
The Giant Pit cutback continued to produce ore from a series of satellite orebodies within the cutback. This ore is
now all primary sulphide and is being fed directly to the ROM. Backfilling in Nugent enabled an alternate access
to be established and ore outside of the reserve was extracted during the quarter. Nugent Pit is now complete
and backfilling has resumed, providing a short haul option for the waste. The processing plant again performed
very well with record mill throughput which offset the impacts of lower grades. Recovery was below plan as two
CPS campaigns were brought forward to take advantage of the latent mill capacity which achieved record
processing throughput rates for the fourth consecutive quarter.
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HILLGROVE RESOURCES LIMITED ACN 004 297 116
Safety and Community
The quarter saw the twelve month Total Recordable Injury Frequency Rate (TRIFR) reduce to 15.2, following
three consecutive months without injury; the longest injury free period since operations began.
FIGURE 1. TOTAL RECORDABLE INJURY FREQUENCY RATE
Operations
TABLE 1. KANMANTOO COPPER MINE PRODUCTION STATISTICS
FY14
to JAN 14
CY14*
to DEC 14
MAR-15
QTR
JUN-15
QTR
SEP-15
QTR
FY15
YTD
12 MTHS
11 MTHS
3 MTHS
3 MTHS
3 MTHS
9 MTHS
Ore to ROM from Pit
kt
2,633
2,620
888
899
924
2,711
Ore to long term stockpiles
kt
262
1,172
103
149
-
252
Mined Waste
kt
10,027
15,899
4,631
4,265
4,306
13,202
Total Tonnes Mined
kt
12,922
19,691
5,622
5,313
5,230
16,165
To ROM from LT Stockpiles
kt
332
509
-
193
179
372
Mining Grade to ROM
%
0.71
0.88
0.64
0.57
0.51
0.57
Ore Milled
kt
2,944
3,023
959
1,041
1,121
3,121
- Cu
%
0.64
0.75
0.58
0.49
0.48
0.51
- Au
g/t
0.12
0.14
0.12
0.07
0.09
0.09
- Cu
%
90.7
90.8
89.8
82.0
77.6
83.2
- Au
%
52.9
51.7
42.6
49.3
46.3
45.9
90,163
57,178
Milled Grade
Recovery
Cu Concentrate Produced
Dry mt
75,423
21,949
17,947
17,282
- Cu
%
22.8
23.0
22.8
23.1
24.1
23.3
- Au
g/t
2.5
2.3
2.2
2.1
2.7
2.3
Contained Metal in Con. - Cu
t
17,184
20,693
5,013
4,138
4,157
13,308
- Au
oz
5,962
6,798
1,532
1,214
1,517
4,263
- Ag
oz
132,854
131,901
24,920
21,554
31,334
77,808
Dry mt
74,051
90,583
22,714
17,104
17,468
57,286
Concentrate Grade
Total Concentrate Sold
* Calendar year
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HILLGROVE RESOURCES LIMITED ACN 004 297 116
Mining production was 5,230kt (1,693k BCM moved) for the September 2015 quarter, of which 924kt was ore,
with no oxide and transitional ore placed onto long term stockpiles.
FIGURE 2. KANMANTOO COPPER MINE TOTAL BCM
Mill throughput and reliability continued to be high during the quarter, with another record throughput achieved.
FIGURE 3. KANMANTOO QUARTERLY MILL TONNES, COPPER RECOVER AND MILL RUN TIME
* With change to 31 December year end, July was included again in milled tonnes for September quarter for comparison purposes.
Mill throughput for the quarter increased significantly from 1,041kt to 1,121kt, at the marginally lower average
grade of 0.48% copper (0.49% in the June 2015 quarter). By increasing mill throughput to include all low grade
ore being mined as well as some stockpiled transitional and oxide ore, cash flow was enhanced despite the
reduced overall head grade as the incremental processing cost remained low.
The copper recovery of 77.6% was lower than the previous quarter (82.0%) due to the processing of 221kt of
CPS ore in the quarter. The copper recovery in areas of primary sulphide remained in line with expectations for
those primary ores at 85.4%.
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HILLGROVE RESOURCES LIMITED ACN 004 297 116
CPS
The CPS (Controlled Potential Sulphidisation) plant which enables the controlled conditioning and processing of
oxide ore in a batch process has continued to run successfully this quarter (with campaigns in July and August).
A total of 221kt transitional and oxide material was processed, with a feed grade of 0.71% and a recovery of
59.1%, to produce 934t of copper in concentrate.
Costs
Quarterly mining unit costs further reduced to a record low of $10.90/bcm, while quarterly processing unit costs
remain low at $5.80/t milled. The slight increase from the record lows of last quarter ($5.60/t) was a result of the
increased CPS processing, which requires additional reagents and lower throughput rates.
FIGURE 4. KANMANTOO QUARTERLY MINING UNIT COSTS
During the quarter, the mining contractor, Andy’s Earthmovers (Asia Pacific) Pty Ltd (AEM) agreed to amend its
supply contract terms as follows:
Discounted rates will apply from July 2015 to June 2016 during the cutback, with escalated rates in the
following twelve months (capped to the discounted amount);
Escalation clauses have been removed from the contract, and rates lowered to those at the commencement
of the contract; and in return
The contract term was extended by two years (subject to statutory approvals).
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HILLGROVE RESOURCES LIMITED ACN 004 297 116
FIGURE 5. KANMANTOO QUARTERLY PROCESSING UNIT COSTS
The C1 cash cost of USD2.18/lb ($3.00/lb) for the quarter remained steady compared to the previous quarter
(USD2.13/lb, $2.74/lb). Lower metal production due to head grade is the dominant driver of higher costs in 2015
compared to 2014, which is partially offset by favourable movements in foreign exchange and the lower
treatment, refining and smelter charges.
TABLE 2. KANMANTOO COPPER MINE COSTS (USC/lb)
FY14
to JAN 14
CY14*
to DEC 14
MAR-15
QTR
JUN-15
QTR
SEP-15
QTR
FY15
YTD
12 MTHS
11 MTHS
3 MTHS
3 MTHS
3 MTHS
9 MTHS
Total Mining Cost
165
169
153
Deferred Mining
-14
7
0
Pre-strip
-33
-38
-29
Ore Inventory Adjustment
-1
-39
-10
179
-24
-56
7
160
-59
-3
26
163
-26
-29
7
Mining Costs
117
99
114
Processing Costs
72
48
42
Other Direct Cash Costs
22
18
19
106
52
16
124
54
14
115
50
17
Total Onsite Costs
211
165
175
Transport & Shipping
17
16
13
Treatment, Refining & Smelter Charges
41
41
43
174
12
46
192
11
36
182
12
43
Total Offsite Costs
58
57
56
Precious Metals Credits
-30
-25
-20
58
-19
47
-21
55
-20
Total Direct Operating Costs
(C1 Cash Costs)
239
197
211
213
218
217
Royalties
4
4
3
D&A
74
80
69
3
72
3
66
3
69
TOTAL COSTS
317
281
283
288
287
289
US cents per lb
* Calendar year
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HILLGROVE RESOURCES LIMITED ACN 004 297 116
NOTES TO TABLE 2:
Deferred Mining: Within each pit, the cost of higher waste benches, proportional to the copper contained in the ore, is normalised
for the impact of strip ratios and copper grades over the life of specific pits. Pre-Strip: Upper levels of pits where the strip ratio is
greater than 10:1 (waste:ore) are capitalised and amortised over the life of the mine based on metal.
Ore Inventory Adjustment: Mining costs per tonne of ore added to (-‘ve) or processed from (+’ve) long term stockpiles. During the
quarter a Net Realisable Value adjustment of stockpile valuation occurred, which is also reflected in the Ore Inventory Adjustment.
Shipping
During the quarter, Hillgrove shipped its twenty-eighth and twenty-ninth shipments of copper concentrate of
10,877WMT (9,812dmt) and 10,304WMT (9,159dmt) respectively.
Revenue
Revenue for the quarter was $34.3 million at an average realised price of $3.53/lb (USD2.69/lb) after hedging.
Exploration Program
Following the positive exploration results and potential for mine life extensions to the north of the Giant pit at
Kanmantoo, work will continue (downhole geophysical and analysis if the Heli-borne TEM) to identify targets for
the drilling programme which is scheduled to commence in mid-2016.
Planning Model Update
During the quarter, a comprehensive external review of the Kanmantoo Global Resource Model was completed
by external consultants. The review found that the Resource Model is globally accurate but could be further
refined to make it area specific and enhance mine scheduling. A Planning model was therefore developed which
more accurately reflects the underperformance of the grade up high in the narrower ore bodies and over
performance of the grade at depth in the wider consistent ore bodies.
The Planning model was developed by calibrating against the historical tonnes and grade mined by Hillgrove
since operations at Kanmantoo recommenced in 2011 through to the beginning of the September Quarter. The
Planning model is expected to prove a more accurate localised predictive tool for forecasting grade and tonnage
production, which is critical to the forward planning process.
Whilst there is no material change to the Global Reserve and Resource estimates in terms of copper metal
production, the Planning model over the existing cut back delivers more tonnes at a lower grade, additional
tonnes of copper and a higher NPV. The Planning model will continue to be refined and is likely to form the basis
for the next Reserve and Resource estimate in 2016.
As a result of this deferral of copper metal from the upper areas, the mine plan has been modified. The Giant pit
cutback will be driven deeper on the eastern half to bring forward high grade ore and mining rates in the next
year have been accelerated, where short haul backfilling is available, to maintain planned mill throughput.
Outlook
The Kanmantoo Mine will continue to advance the Giant Pit cutback, with the main higher grade orebodies still
expected to be accessed in 2016. The Matthew extension is planned to be completed in November, with ore
primarily sourced from Spitfire and Schultze into early 2016.
The CPS plant will continue to be used in the short term to supplement copper production during the cutback.
As noted above, the new Planning model projects copper production slightly lower than the lower end of the
previous FY15 guidance (18,500 tonnes), which is partially offset by higher gold production. The revised
guidance is copper production reducing to 17,500t to 18,500t contained copper (previously 18,500t to 20,500t)
and gold production increasing to 5,500oz to 6,500oz (previously 5,000oz to 6,000oz). C1 costs remain within
FY15 guidance.
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HILLGROVE RESOURCES LIMITED ACN 004 297 116
INDONESIAN GOLD AND GOLD/COPPER ASSETS
The focus on its Kanmantoo operations means the Indonesian assets are no longer considered core assets.
Hillgrove believes there is inherent value in the exploration tenements and continues to pursue options to realise
this value.
BIRD’S HEAD COPPER/GOLD PROJECT, WEST PAPUA, INDONESIA
IUP40/2010 (Hillgrove 80%)
Hillgrove is an 80% shareholder in PT. Akram Resources which holds IUP40/2010 in the Bird’s Head region of
West Papua. Hillgrove is responsible for the management of exploration and development activities up to a
decision to mine. The IUP covers 992.3km² and is valid until December 2016.
SUMBA GOLD PROJECT, INDONESIA
IUP 322/KEP/HK/2009 (Hillgrove 80%)
Hillgrove is an 80% shareholder in PT Fathi Resources which holds IUP 322 on the island of Sumba. Hillgrove
is responsible for the management of exploration and development activities, up to a decision to mine. The IUP
Explorasi (Exploration and Mining Business Licence) covers 750km² and is valid until November 2015.
HILLGROVE CORPORATE
Work continued on the simplification and consolidation of Hillgrove’s operations along with the
implementation of cost reduction initiatives across the Company, with the elimination and consolidation of
a number of roles at both the Corporate Office and the Kanmantoo Mine site.
Cash and Investments
Cash as at 30 September 2015 was $8.9 million.
Debt as at 30 September 2015 was $20.0 million with net debt at $11.1 million.
CORPORATE INFORMATION
Issued Share Capital at 30 September 2015
Ordinary shares
Employee Performance Rights
Unlisted options
188,109,342
2,078,125
3,125,000
Share price activity for the Quarter
High
Low
Last (30 September 2015)
Average Daily Volume
0.230
0.150
0.175
305,507
SHARE REGISTRY
REGISTERED OFFICE
Boardroom Limited
GPO Box 3993
Sydney NSW 2001, Australia
F: +61 2 9290 9655
T: (within Australia) 1300 737 760
T: (outside Australia) +61 2 9290 9600
Hillgrove Resources Limited
Suite 1709, Level 17 Australia Square Tower
264-278 George Street
Sydney NSW 2000, Australia
E: info@hillgroveresources.com.au
T: +61 2 8247 9300
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HILLGROVE RESOURCES LIMITED ACN 004 297 116
For more information contact:
Steve McClare
Managing Director
Tel: +61 (0)2 8247 9300
ABOUT HILLGROVE
Hillgrove is an Australian mining company listed on the Australian Securities Exchange (ASX: HGO) focused on the
operation of the Kanmantoo Copper Mine in South Australia, and with exploration projects on its Indonesian
tenements. The Kanmantoo Copper Mine is located less than 55 kilometres from Adelaide in South Australia. With
construction completed in late 2011, Kanmantoo is an open-cut mine with a throughput of 3.0 - 3.5Mt p.a., to produce
up to 100,000 dry metric tonnes of copper concentrate per annum, containing approximately 20,000t copper and
associated gold and silver per annum over the current life of mine.
Kanmantoo Global Mineral Resource Estimate at End February 2013
JORC 2012
Classification
Tonnage
(Mt)
Cu
(%)
Au
(g/t)
Ag
(g/t)
In Situ Resource
Measured
Indicated
Inferred
Long Term Stockpiles
Measured
Indicated
2.63
21.77
5.0
29.46
1.39
0.50
1.89
0.88
0.82
0.67
0.80
0.46
0.18
0.39
0.10
0.23
0.13
0.20
N/A
N/A
-
1.95
2.21
1.79
2.11
N/A
N/A
-
31.30
0.78
0.20
2.11
Cu
(%)
0.77
0.72
0.73
0.46
0.46
0.71
Au
(g/t)
0.08
0.20
0.18
N/A
0.18
Ag
(g/t)
1.7
2.0
1.9
N/A
1.9
Total
Note: In Situ Reserve >0.20% Cu. Long Term Stockpiles >0.15% Cu.
Kanmantoo Global Ore Reserve Estimate at End February 2013
In Situ Reserve
Long Term Stockpiles
JORC 2012
Classification
Proven
Probable
Proven
Total
Tonnage
(Mt)
2.5
18.2
20.7
1.4
1.4
22.1
Note: In Situ Reserve >0.20% Cu. Long Term Stockpiles >0.15% Cu.
Competent Person's Statement
The information in this release that relates to Mineral Resources is based upon information compiled by Ms Michaela Wright, who is a
Member of The Australasian Institute of Mining and Metallurgy. Ms Wright is a full-time employee of Hillgrove Resources Limited and
has sufficient experience relevant to the styles of mineralisation and type of deposit under consideration to qualify as a Competent
Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore
Reserves (JORC Code)’. Ms Wright has consented to the inclusion in the release of the matters based on their information in the form
and context in which it appears.
The information in this release that relates to Ore Reserves is based upon information compiled by Mr Steven McClare, who is a
Member of The Australasian Institute of Mining and Metallurgy. Mr McClare is a full-time employee of Hillgrove Resources Limited and
has sufficient experience relevant to the styles of mineralisation and type of deposit under consideration to qualify as a Competent
Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore
Reserves (JORC Code)’. Mr McClare has consented to the inclusion in the release of the matters based on their information in the form
and context in which it appears.
9.
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