TORONTO, March 15, 2013 /PRNewswire/ - Harry Winston
Diamond Corporation (TSX:HW), (NYSE:HWD) ("Harry Winston") is
pleased to report an updated reserve and resource statement for the
Diavik Diamond Mine as at December 31,
2012.
Significant new data from the processing of
samples from the 2011 deep drilling program on the A-154 North and
A-418 kimberlite pipes was incorporated into the latest reserve and
resource models in calendar 2012. The updated A-154 North
model has added an additional new reserve of 0.5 million tonnes,
while 1.3 million tonnes of probable reserve was promoted to proven
status and 0.4 million tonnes of new resources was defined at
depth. The updated A-418 model has promoted 5.0 million
tonnes from probable to proven reserve status.
The A-154 South and A-21 kimberlite pipes were
not part of the 2011 drill program and consequently there are no
significant changes to their reserve and resource models. The
A-21 pipe remains a resource while economic studies continue, but
would be promoted to a reserve once a feasibility plan is
approved.
The tables below summarize the mineral reserves
and mineral resources at the Diavik Diamond Mine as at the end of
December 31, 2012 expressed in
millions of tonnes, carats per tonne, and millions of carats. The
mineral reserves set out below account for all depletions due to
production and sampling to the end of December 31, 2012, and the increase in the
reserves and resources of A-154 North and the change in reserves of
A-418 as described above. Totals may not add up exactly due to
rounding. The values shown are for 100% of the Diavik Joint
Venture.
| Mineral Reserves at Diavik
Diamond Mine - December 31, 2012 |
| |
|
|
|
| |
PROVEN RESERVES |
PROBABLE RESERVES |
PROVEN and PROBABLE |
| M
t |
ct/t |
M
ct |
M
t |
ct/t |
M
ct |
M
t |
ct/t |
M
ct |
| A-154 South |
|
|
|
|
|
|
|
|
|
| |
|
Open Pit |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
| |
|
Underground |
1.2 |
4.2 |
5.2 |
1.4 |
3.4 |
4.9 |
2.7 |
3.8 |
10.1 |
| |
|
Total A-154S |
1.2 |
4.2 |
5.2 |
1.4 |
3.4 |
4.9 |
2.7 |
3.8 |
10.1 |
| A-154 North |
|
|
|
|
|
|
|
|
|
| |
|
Open Pit |
-- |
-- |
-- |
-- |
-- |
-- .. |
-- |
-- |
-- .. |
| |
|
Underground |
4.1 |
2.1 |
8.4 |
4.1 |
2.1 |
8.4 |
8.1 |
2.1 |
16.8 |
| |
|
Total A-154N |
4.1 |
2.1 |
8.4 |
4.1 |
2.1 |
8.4 |
8.1 |
2.1 |
16.8 |
| A-418 |
|
|
|
|
|
|
|
|
|
| |
|
Open Pit |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
| |
|
Underground |
5.1 |
3.8 |
19.3 |
2.2 |
2.9 |
6.4 |
7.2 |
3.6 |
25.6 |
| |
|
Total A-418 |
5.1 |
3.8 |
19.3 |
2.2 |
2.9 |
6.4 |
7.2 |
3.6 |
25.6 |
| Stockpile |
0.3 |
2.9 |
0.9 |
-- |
-- |
-- |
0.3 |
2.9 |
0.9 |
| TOTAL |
|
|
|
|
|
|
|
|
|
| |
|
Open Pit |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
| |
|
Underground |
10.3 |
3.2 |
32.9 |
7.7 |
2.6 |
19.6 |
18.0 |
2.9 |
52.5 |
| |
|
Stockpile |
0.3 |
2.9 |
0.9 |
-- |
-- |
-- |
0.3 |
2.9 |
0.9 |
| |
Total
Reserves |
10.7 |
3.2 |
33.8 |
7.7 |
2.6 |
19.6 |
18.3 |
2.9 |
53.5 |
| Note: Totals may not add up due to
rounding. |
The mineral resources have reasonable
potential to be mined but do not have mining losses and/or dilution
applied at this time, and as such they represent in situ values.
Mineral resources that are not mineral reserves do not have
demonstrated economic viability.
| Mineral
Resources at Diavik Diamond Mine - December 31, 2012 |
|
|
MEASURED |
INDICATED |
INFERRED |
|
M t |
ct/t |
M ct |
M t |
ct/t |
M ct |
M t |
ct/t |
M ct |
| A-154 South |
-- |
-- |
-- |
-- |
-- |
-- |
0.04 |
3.6 |
0.2 |
| A-154 North |
-- |
-- |
-- |
-- |
-- |
-- |
2.3 |
2.6 |
5.9 |
| A-418 |
-- |
-- |
-- |
-- |
-- |
-- |
0.3 |
2.4 |
0.7 |
| A-21 |
3.6 |
2.8 |
10.0 |
0.4 |
2.6 |
1.0 |
0.8 |
3.0 |
2.3 |
| TOTALS |
3.6 |
2.8 |
10.0 |
0.4 |
2.6 |
1.0 |
3.4 |
2.7 |
9.0 |
| Note: Totals may not
add up due to rounding. |
Qualified Person
The reserve and resource information set out
in this release was prepared by or under the supervision of
Calvin G. Yip, P. Eng., an employee
of Diavik Diamond Mines Inc. and a Qualified Person within the
meaning of National Instrument 43-101. The Qualified Person
has verified the data disclosed, and the data underlying the
information contained herein.
About Harry Winston Diamond
Corporation
Harry Winston Diamond Corporation is a
diamond enterprise with premium assets in the mining and retailing
segments of the diamond industry. Harry
Winston supplies rough diamonds to the global market from
its 40 percent ownership interest in the Diavik Diamond Mine.
The Company's luxury brand segment is a premier diamond jeweler and
luxury timepiece retailer with salons in key locations, including
New York, Paris, London, Beijing, Tokyo, Hong
Kong and Beverly Hills.
For more information, please
visit www.harrywinston.com. or for investor
information,
visit http://investor.harrywinston.com.
SOURCE Harry Winston Diamond Corporation