Iamgold Reports Additional High-Grade Intersections from Infill and Expansion Drilling at Saramacca
NEWS RELEASE
TSX: IMG NYSE: IAG
IAMGOLD REPORTS ADDITIONAL HIGH-GRADE INTERSECTIONS FROM
INFILL AND EXPANSION DRILLING AT SARAMACCA
Toronto, Ontario, November 16, 2017 – IAMGOLD Corporation (“IAMGOLD” or the “Company”) today
provided an update from its ongoing Phase II 2017 drilling program at the Saramacca project, located 25
kilometres southwest of its Rosebel Gold Mine (“RGM”) in Suriname. Following the disclosure of an initial
resource estimate (see news release dated September 5th, 2017), the Company commenced a 22,000-
metre diamond drilling program with the objective to: 1) convert inferred resources to indicated; 2) target
expansions to the existing resource along known mineralized trends and at depth, and 3) begin drill testing
identified exploration targets. Assay results reported herein have been received from 37 drill holes totaling
9,553 metres. The program is ongoing and further assay results will be reported once they are received,
validated and compiled.
Assay intersections relating to this release are provided in Table 1 and include the following highlights:
Infill Drill Holes:
SMDD17-181A: 39.0 metres grading 3.47 g/t Au
SMDD17-185: 57.0 metres grading 2.56 g/t Au
Expansion Drill Holes:
SMDD17-182: 6.0 metres grading 67.39 g/t Au (15.33 g/t Au capped)
SMDD17-196: 28.5 metres grading 3.85 g/t Au
SMDD17-202: 39.0 metres grading 3.06 g/t Au
SMDD17-213: 34.5 metres grading 4.50 g/t Au
(A drill hole plan map is attached to this news release)
Craig MacDougall, Senior Vice President, Exploration for IAMGOLD, stated: “ The ongoing drilling program
continues to deliver positive results, not only increasing our confidence in the existing resources, but
extending mineralization below the initial resource pit shell which is expected to have a positive impact on
future resource estimates. This, coupled with the ongoing engineering studies, is expected to allow us to
upgrade the project to a reserve status in 2018 and to target production for 2019.”
2017 Exploration Program
Drilling from the current program has confirmed further continuity of mineralization in areas associated with
the main mineralized structures within and below the current resource pit shell (see tables 1 A & B) and in
secondary structures in the hanging wall (see tables 1 C & D). These results are expected to have a
positive impact on future resource updates. Results from initial step out holes to the northwest and
southeast along strike (see tables 1 E & F) did not intersect significant mineralization, although
encouragingly the main host structure appears to continue. It must be noted that the pinch and swell of
mineralized zones within the deposit foot print is typical. Further drilling is required to test for additional
mineralized zones along strike.
page 2 of 7
In addition to the drilling program outlined above, the Rosebel m ine team is working to advance the
Saramacca deposit towards production. An Environmental and Social Impact Study (ESIA) is underway
and preliminary engineering work is advancing on mine design and various infrastructure elements, such
as ore transport options, access roads, and waste rock disposal. In addition, field work has commenced to
provide geotechnical and hydrogeological information and to complete condemnation work over areas of
the proposed site infrastructure. A comprehensive metallurgical testing program will also be undertaken to
refine the recovery assumptions and to test the crushing and grinding characteristics of the mineralization.
About the Saramacca Project
The Saramacca project is strategically located approximately 25 kilometres southwest of the Rosebel Gold
Mine milling facility. Mineralization is hosted in the Paramaka Formation within the lower part of the
Marowijne Greenstone Belt, which is dominated by metamorphosed basalts in the immediate project area.
These are traversed by the regional, northwest trending Saramacca shear zone, which is believed to be an
important deformation zone for the localization of gold mineralization.
On August 30, 2016, the Company signed a letter of intent with the Government of Suriname to acqu ire
rights to the Saramacca property, with the intent of defining a National Instrument 43-101 mineral resource
within 24 months. The terms of the letter included an initial payment of $0.2 million, which enabled
immediate access to the property for Rosebel’s exploration team to conduct due diligence, as well as
access to the data from previous exploration activity at the Saramacca property. On September 30 , 2016,
having been satisfied with the results of the due diligence, the Company ratified the letter of intent to
acquire the Saramacca property and subsequently paid $10 million in cash and agreed to issue 3.125
million IAMGOLD common shares to the Government of Suriname in three approximately equal annual
instalments on each successive anniversary of the date the right of exploration was transferred to Rosebel
(December 14, 2016). In addition, the agreement provides for a potential upward adjustment to th e
purchase price based on the contained gold ounces identified by Rosebel in National Instrument 43-101
measured and indicated resource categories, within a certain Whittle shell within the first 24 months, to a
maximum of $10 million.
The Saramacca project falls within the “UJV” area as defined in an Agreement with the Government of
Suriname announced on April 15, 2013. The Agreement establishes a joint venture growth vehicle under
which Rosebel would hold a 70% participating interest and the Government will acquire a 30%
participating interest on a fully-paid basis.
On September 5th, 2017, the Company announced the first mineral resource estimate in accordance with
the Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”) Definition Standards incorporated by
reference in National Instrument 43-101 (“NI 43-101”) for the Saramacca deposit, and subsequently filed a
NI 43-101 Technical Report available on the Company's website at www.iamgold.com or under the
Company's profile at www.sedar.com. The resource estimate comprises 14.4 million tonnes of indicated
resources averaging 2.20 grams of gold per tonne for 1,022,000 ounces and 13.6 million tonnes of
inferred resources averaging 1.18 grams of gold per tonne for 518,000 ounces. Approximately 60%
of the resources are contained within shallow, softer laterite and saprolite hosted mineralization. The
Saramacca deposit is believed to have significant potential for expansion.
Qualified Persons and Technical Information
The drilling results contained in this news release have been prepared in accordance with National
Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI 43-101").
The "Qualified Person" responsible for the supervision of the preparation , verification and review of the
technical information in this release is Samuelle Gariepy, P. Geo., Senior Exploration Geologist with the
regional exploration team at the Rosebel Gold Mine in Suriname. She is considered a "Qualified Person"
for the purposes of National Instrument 43-101 with respect to the technical information being reported on.
The technical information has been included herein with the consent and prior review of th e above noted
Qualified Person.
The information in this news release was reviewed and approved by Craig MacDougall, P.Geo., Senior
Vice President, Exploration for IAMGOLD. Mr. MacDougall is a Qualified Person as defined by National
Instrument 43-101.
page 3 of 7
The sampling of, and assay data from, drill core is monitored through the implementation of a quality
assurance - quality control (QA-QC) program designed to follow industry best practice. Drill core (HQ and
NQ size) samples are selected by the IAMGOLD geologists and sawn in half with a diamond saw at the
Rosebel mine site. Half of the core is retained at the site for reference purposes. Sample intervals may
vary from half a metre to one and a half metres in length depending on the geological observations.
Samples are transported in sealed bags to FILAB in Paramaribo, Suriname, a representative lab of ALS.
FILAB is an ISO 9001 (2008) and ISO/IEC 170250 accredited laboratory. Samples are weighed and
coarse crushed to <2.5 mm, and 350-450 grams is pulverized to 85% passing <100 μm. Samples are
analyzed for gold using standard fire assay technique with a 50 gram charge and an Atomic Absorption
(AA) finish. IAMGOLD inserts blanks and certified reference standard in the sample sequence for quality
control. Samples representative of the various lithologies are collected from each drill hole and measured
for bulk density at the site RGM laboratory.
Forward Looking Statement
This news release contains forward-looking statements. All statements, other than of historical fact, that
address activities, events or developments that the Company believes, expects or anticipates will or may
occur in the future (including, without limitation, statements regarding expected, estimated or planned gold
production, cash costs, margin expansion, capital expenditures and exploration expen ditures and
statements regarding the estimation of mineral resources, exploration results, potential mineralization,
potential mineral resources and mineral reserves) are forward-looking statements. Forward-looking
statements are generally identifiable by use of the words “will”, “should”, “continue”, “expect”, “estimate”,
“believe”, “plan” or “project” or the negative of these words or other variations on these words or
comparable terminology. Forward-looking statements are subject to a number of risks and uncertainties,
many of which are beyond the Company’s ability to control or predict, that may cause the actual results of
the Company to differ materially from those discussed in the forward-looking statements. Factors that
could cause actual results or events to differ materially from current expectations include, among other
things, without limitation, failure to meet expected, estimated or planned gold production, cash costs,
margin expansion, capital expenditures and exploration expenditures and failu re to establish estimated
mineral resources, the possibility that future exploration results will not be consistent with the Company's
expectations, changes in world gold markets and other risks disclosed in IAMGOLD’s most recent Form
40-F/Annual Information Form on file with the United States Securities and Exchange Commission and
Canadian provincial securities regulatory authorities. Any forward-looking statement speaks only as of the
date on which it is made and, except as may be required by applicable securities laws, the Company
disclaims any intent or obligation to update any forward-looking statement.
About IAMGOLD
IAMGOLD (www.iamgold.com) is a mid-tier mining company with four operating gold mines on three
continents. A solid base of strategic assets in North and South America and West Africa is complemented
by development and exploration projects and continued assessment of accretive acquisition opportunities.
IAMGOLD is in a strong financial position with extensive management and operational expertise.
For further information please contact:
Ken Chernin, VP Investor Relations, IAMGOLD Corporation
Tel: (416) 360-4743 Mobile: (416) 388-6883
Laura Young, Director, Investor Relations, IAMGOLD Corporation
Tel: (416) 933-4952 Mobile: (416) 670-3815
Toll-free: 1-888-464-9999 [email protected]
Please note:
This entire news release may be accessed via fax, e -mail, IAMGOLD's website at www.iamgold.com and through CNW Group’s
website at www.newswire.ca. All material information on IAMGOLD can be found at www.sedar.com or at www.sec.gov.
Si vous désirez obtenir la version française de ce communiqué, veuillez consulter le
http://www.iamgold.com/French/accueil/default.aspx.
page 4 of 7
Table 1: Diamond Drill Hole Assay Results
A: Infill drilling along the main mineralized structures (main fault) within resource pit shell
HOLE-ID
Local UTM grid End of
hole (m)
Azimuth
(°) Dip (°) From
(m)
To
(m)
Interval
(m)
True
Width (m)3 Au (g/t)
Au (g/t)
(capped at 30
g/t Au)2 Easting Northing Elev.
SMDD17-181 32833 63386 891 89.2 215 -50 0 10.5 10.5 5.65 0.88 0.88
SMDD17-181A 32832 63384 891 345 215 -50 0 10.5 10.5 5.73 1.07 1.07
228 235.5 7.5 4.09 2.59 2.59
261 300 39 21.28 3.47 3.47
SMDD17-188 32495 63684 866 117 215 -50 24 55.5 31.5 17.19 2.16 2.16
94.5 100.5 6 3.27 6.05 6.05
SMDD17-195 32329 63972 826 186 215 -47 No significant results
248 254 6 3.11 0.55 0.55
SMDD17-216 32688 63268 917 420.5 35 -50 67.8 75 7.2 4.89 2.52 2.52
B: Expansion drilling along the main mineralized structures (main fault) below resource pit shell
HOLE-ID
Local UTM grid End of
hole (m)
Azimuth
(°) Dip (°) From
(m)
To
(m)
Interval
(m)
True
Width (m)3 Au (g/t)
Au (g/t)
(capped at 30
g/t Au)2 Easting Northing Elev.
SMDD17-182 32873 63357 892 402.5 215 -50 309.5 315.5 6 3.27 67.39 15.33
348.5 363.3 14.8 8.07 2.91 2.91
SMDD17-187 32672 62976 912 417 35 -50 297 304 7 4.75 1.27 1.27
SMDD17-190 32436 63863 848 237 215 -50 No significant results
SMDD17-192 32406 63909 838 258 215 -50 No significant results
SMDD17-193 32729 63499 880 306 215 -50 No significant results
SMDD17-194 32710 62963 899 384.5 35 -50 261.5 272 10.5 7.13 1.3 1.3
SMDD17-196 32776 63482 874 345 215 -50 240 268.5 28.5 15.55 3.85 3.85
SMDD17-198 32631 63616 888 275 215 -50 220.5 226 5.5 3 2.08 2.08
SMDD17-199 32456 63794 876 193.5 215 -50 No significant results
SMDD17-201 32302 63588 881 321.5 35 -50 279.5 285.5 6 4.07 3.26 3.26
SMDD17-202 32588 63733 862 315.5 215 -51 255.5 294.5 39 20.74 3.06 3.06
SMDD17-204 32144 63798 882 273.5 35 -53 No significant results
SMDD17-207 31799 64341 721 225.5 35 -50 No significant results
SMDD17-209 31762 64290 730 351.5 35 -55 276.5 290 13.5 8.34 1.04 1.04
SMDD17-211 32860 63425 880 447.5 215 -50 362 393.5 31.5 17.19 1.88 1.88
SMDD17-213 32158 64421 720 432.5 215 -50 0 5.25 5.25 2.86 0.6 0.6
180.5 189.5 9 4.91 0.72 0.72
206 219.5 13.5 7.37 1.02 1.02
329 338 9 4.91 1.19 1.19
360.5 395 34.5 18.82 4.5 4.5
414.5 422 7.5 4.09 1.13 1.13
page 5 of 7
C: Infill drilling along the secondary mineralized structures within resource pit shell
HOLE-ID Local UTM grid End of
hole (m)
Azimuth
(°)
Dip
(°)
From
(m)
To
(m)
Interval
(m)
True
Width (m)3 Au (g/t)
Au (g/t)
(capped at 30
g/t Au)2
Easting Northing Elev.
SMDD17-185 32795 63592 864 157.5 215 -50 37.5 94.5 57 31.1 2.56 2.56
SMDD17-200 32319 64126 773 297 215 -50 153.4 162 8.6 4.69 5.8 5.8
SMDD17-210 32179 64280 730 309.5 215 -52 120 131.5 11.5 5.96 3.44 3.44
248 254 6 3.93 0.54 0.54
D: Expansion drilling along the secondary mineralized structures below resource pit shell
HOLE-ID
Local UTM grid End of
hole (m)
Azimuth
(°)
Dip
(°)
From
(m)
To
(m)
Interval
(m)
True
Width (m)3 Au (g/t)
Au (g/t)
(capped at 30
g/t Au)2 Easting Northing Elev.
SMDD17-183 32904 63480 859 231 215 -50 0 9 9 4.91 1.16 1.16
196.5 217.5 21 11.46 4.87 4.87
SMDD17-191 32810 63088 883 282 35 -50 No significant results
SMDD17-197 32362 64112 779 297 215 -50 204 213 9 4.91 1.43 1.43
SMDD17-203 32272 64152 767 291 215 -50 0 16.5 16.5 9 0.8 0.8
136.5 142.5 6 3.27 2.72 2.72
SMDD17-208 32912 63408 873 183.5 215 -50 0 12 12 6.55 2.33 2.33
139.5 153.5 14 7.64 2.81 2.81
159.5 170 10.5 5.73 0.52 0.52
SMDD17-215 31917 64604 697 243 215 -50 1.5 21 19.5 10.64 1 1
142.5 151.5 9 4.91 3.98 3.98
E: Expansion drilling along strike at the south east end of resource pit shell
HOLE-ID
Local UTM grid End of
hole (m)
Azimuth
(°)
Dip
(°)
From
(m)
To
(m)
Interval
(m)
True
Width (m)3 Au (g/t)
Au (g/t)
(capped at 30
g/t Au)2 Easting Northing Elev.
SMDD17-184 33026 63226 874 243 215 -50 No significant results
SMDD17-186 32968 62957 846 234 215 -50 No significant results
SMDD17-189 32907 62907 854 165 215 -50 No significant results
F: Expansion drilling along strike at the north west end of resource pit shell
HOLE-ID
Local UTM grid End of
hole (m)
Azimuth
(°)
Dip
(°) From (m) To (m) Interval
(m)
True
Width
(m)3
Au (g/t)
Au (g/t)
(capped
at 30 g/t
Au)2 Easting Northing Elev.
SMDD17-212 31723 64675 667 84 215 -50 30 39 9 4.91 0.69 0.69
SMDD17-214 31776 64750 659 225.5 215 -50 No significant results
page 6 of 7
G: Exploration drilling north of resource pit shell
HOLE-ID
Local UTM grid End of
hole (m)
Azimuth
(°)
Dip
(°)
From
(m)
To
(m)
Interval
(m)
True
Width (m)3 Au (g/t)
Au (g/t)
(capped at 30
g/t Au)2 Easting Northing Elev.
SMDD17-205 32483 64277 717 156 215 -50 No significant results
SMDD17-206 32541 64348 702 180.5 215 -50 No significant results
Notes:
1. Drill hole intercepts are calculated using a 0.50 g/t Au assay cut-off and 5m minimum length
2. During compositing, assays greater than 30 g/t Au are capped at 30 g/t Au
3. True widths are estimated from intersected geometries
page 7 of 7
Figure 1: Saramacca drill hole plan map and highlighted 2017 assay results.
SMDD17-196
28.5m grading 3.85g/t Au