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 http://www.harrywinston.com. or for investor
information,
visit http://investor.harrywinston.com.
For further information:
Contacts:
Mr. Richard Chetwode, Vice
President, Corporate Development - +44(0)7720970762
rchetwode@harrywinston.com
Ms. Kelley Stamm, Manager,
Investor Relations - +1-(416)-205-4380
or kstamm@harrywinston.com