Bonterra Intersects 79.9 g/t Au over 2.1 m; Including 333.0 g/t over 0.5 m at the Barry Underground Project and Provides Corporate Updates
Bonterra Intersects 79.9 g/t Au over 2.1 m;
Including 333.0 g/t over 0.5 m at the Barry
Underground Project and Provides Corporate
Updates
Val-d'Or, Quebec--(Newsfile Corp. - November 15, 2022) -
Bonterra Resources Inc. (TSXV: BTR)
(OTCQX: BONXF) (FSE: 9BR2)
("
Bonterra
" or the "
Company
") is pleased to announce the first
results from the ongoing infill drilling campaign at the Barry underground project as well as the latest
results of the open pit project, which are expected to be used for the grade interpolation of the
mineralization at depth. The Company commenced a 125,000 metres ("
m
") drill program at the Barry
underground deposit last August, which contains 0.5 million ounces of Measured and Indicated Mineral
resources and 0.7 million ounces of Inferred Mineral resources, as stated in the last mineral resource
estimate (the "
2021 MRE
", see press release dated June 23, 2021).
To date, 15,900 m (33 holes) of
infill drilling has been completed from the surface, mainly in the upper half of the Barry underground
deposit.
Highlights include:
79.9 g/t Au over 2.1 m, including 333.0 g/t Au over 0.5 m in hole MB-22-529A
12.8 g/t Au over 7.9 m, including 29.1 g/t Au over 2.8 m in hole MB-22-433
10.7 g/t Au over 5.7 m, including 96.5 g/t Au over 0.5 m and 8.7 g/t Au over 0.5 m in hole
MB-22-509A
10.2 g/t Au over 4.0 m, including 13.9 g/t Au over 1.1 m and 48.6 g/t Au over 0.5 m in hole MB-22-
430
12.9 g/t Au over 3.3 m, including 31.3 g/t Au over 1.1 m in hole MB-22-539A
Marc André Pelletier, President and CEO, commented: "We are pleased with the recent results of the
ongoing infill drilling campaign for the underground deposit at Barry. MB-22-529A drill hole results of
333.0 g/t over 0.5 m represents the highest reported interception ever at the Barry project. This
campaign fits well with our strategy of moving the Barry asset toward a production re-start. Considering
the magnitude of the underground mineral resources, the deposit has the potential to become a long-
lived operation and the Company intends to further define its potential. Drilling at Barry will continue with
two drill rigs on site. Also, the pre-feasibility study ("
PFS
") on the Barry open pit project is at an important
juncture and an update is expected before year end."
Diamond Drilling Results Highlights:
Figure 1 - Barry Project -Surface Plan, holes and highlight's location
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/1528/144192_a1af5409347dcb3a_001full.jpg
Figure 2 - Barry Project - Zoomed-in Surface Plan, holes and highlight's location
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/1528/144192_a1af5409347dcb3a_002full.jpg
The Barry open pit drill program was designed to fill gaps in the drill spacing in and immediately around
the pit shell from the 2021 MRE. Some holes have been extended below the pit scope to target high
potential underground mineralization zones and will be used for the grade interpolation of the
mineralization at depth. The results obtained from the in the pit mineralization depth range confirmed the
strong southeast extension potential yielded by the H6 zone. Highlights include, from 25 to 40 m vertical
depth, 10.7 g/t Au over 5.7 m including 96.5 g/t Au over 0.5 m and 8.7 g/t Au over 0.5 m in hole MB-22-
509A, 1.5 g/t Au over 8.8 m in hole MB-22-518 and 5.4 g/t Au over 2.8 m including 23.7 g/t Au over 0.6
m in hole MB-22-516 (figure 3).
Figure 3 - Barry Project - Long section 35m, H6 zone results, Looking Northwest
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/1528/144192_a1af5409347dcb3a_003full.jpg
The definition drilling program of the Barry underground project is designed to convert inferred resources
from the 2021 MRE in indicated resources by decreasing the drill spacing to 25 m. The program
especially aims to delineate and expand high grades mineralization shoots identified in the 2021 MRE.
The results from the H1 zone, 200m below the surface, demonstrated the continuity of these mineralized
shoots over more than 150 m. Best results includes : 12.8 g/t Au over 7.9 m including 29.1 g/t Au over
2.8 m in hole MB-22-433, 10.2 g/t Au over 4,0 m including 13.9 g/t Au over 1.1 m and 48.6 g/t Au over
0.5 m in hole MB-22-430 and
12.9 g/t Au over 3.3 m including 31.3 g/t Au over 1.1 m in hole MB-22-
539A (figure 4).
Figure 4 - Barry Project - Longitudinal Section 35m, H1 Zone, looking northwest
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/1528/144192_a1af5409347dcb3a_004full.jpg
As winter conditions allow access to drill sites, the upcoming infill program will be focused on the prolific
sub-vertical 800 Zone and its surrounding H-series zones. Preliminary results from accessible drill site
returned good results in accordance with 2021 MRE block model prediction. Highlights include 2.5 g/t
Au over 13.8 m including 5.3 g/t Au over 2.9 m in hole MB-22-534, and 9.5 g/t Au over 2.1 m in hole MB-
22-529A. In addition to these results the highest drill hole sample ever reported at the Barry project has
returned 333.0 g/t Au over 0.5 m included in a mineralized interval of 79.9 g/t Au over 2.1 m in hole MB-
22-529A from a newly interpreted H series zone nearby the 800 zone (figure 5).
Figure 5 - Barry Project - Cross Section 25m, Hole MB-22-528A, MB-22-529A, MB-22-534,
looking southwest
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/1528/144192_a1af5409347dcb3a_005full.jpg
Barry Deposit Geology
The Barry gold deposit is characterized by three dominant sets of structures, all dipping to the southeast.
The sub-vertical shear zones and the H-Series shear zones dipping 25 to 40 degrees are hosted within
intermediate to mafic volcanics and tuffs with local felsic intrusions. Contact zones dip at 50-65 degrees
along the lower and upper contacts of the D1, D2 and D3 felsic intrusions with mafic volcanics. Gold
mineralization is associated with disseminated sulfides within shear zones and veins with local visible
gold. The Barry deposit has been delineated over 1.4 kilometre along strike and 700 m vertical and
remains open for expansion.
Corporate Updates
The Company is also pleased to announce that it has retained PI Financial Corp. (
"PI"
) to provide
marketing services in accordance with TSX Venture Exchange (
"TSX"
) policies. PI will trade the
securities of Bonterra on the TSX for the purposes of maintaining an orderly market. In consideration of
the services provided by PI, the Company will pay PI a monthly cash fee of $5,000 for a minimum term of
three months and renewable thereafter. Bonterra and PI are unrelated and unaffiliated entities. PI will not
receive shares or options as compensation. The capital used for market making will be provided by PI.
In addition, the Company also announces that at the annual and special meeting of its shareholders held
on June 22, 2022 (the "
Meeting
"), the shareholders approved the adoption of Bonterra's new omnibus
equity incentive plan (the "
Omnibus Plan
") and reserved common shares of Bonterra ("
Common
Shares
") for issuance under the Omnibus Plan. The Omnibus Plan allows the Company to issue stock
options, restricted share units, performance share units and deferred share units (the "
Awards
").
The
Omnibus Plan is a "rolling up to 10% plan" (as that term is used by the TSX) and replaces the
Company's previous rolling 10% stock option plan.
The maximum aggregate number of Common
Shares that may be reserved for issuance under the Omnibus Plan at any point in time is 10% of the
outstanding Common Shares in the capital of the Company at the time of the grant of an Award and the
Common Shares reserved and currently available for issuance under the Omnibus Plan is 12,619,550
Common Shares (such number being equal to approximately 10% of the issued and outstanding
Common Shares). On November 24, 2021, the TSX adopted a new policy governing security-based
compensation (the "
New Policy 4.4
"). In accordance with the New Policy 4.4, the Company has
adopted a number of these amendments in the Omnibus Plan. These changes include allowing option
holders to exercise options on a "cashless exercise" or "net exercise" basis, as now expressly permitted
by the
New Policy 4.4.
"Cashless exercise" is a method of exercising stock options in which a securities dealer
loans funds to the option holder or sells the same shares as those underlying the option, prior to or in
conjunction with the exercise of options, to allow the option holder to fund the exercise of some or all of
their options.
"Net exercise" is a method of option exercise under which the option holder does not make
any payment to the issuer for the exercise of their options and receives on exercise a number of shares
equal to the intrinsic value (current market price less the exercise price) of the option valued at the
current market price. Under the New Policy 4.4, the current market price must be the 5-day volume
weighted average trading price prior to option exercise. "Net exercise" may not be utilized by persons
performing investor relations services. The Omnibus Plan, is further described in the Company's
information circular, a copy of which can be found on the Company's SEDAR profile at
www.sedar.com
.
Diamond drill hole results table:
The following table shows the significant intersections of the drill holes presented in this press release.
Program
Hole ID
From
(m)
To
(m)
Length
(m)
Grade
(g/t Au)
Metal
Factor
(length *
grade)
Zone
Pit Extension NE /Underground
MB-21-407
275.5
276.5
1.0
6.4
6.4
New H
Pit Extension NE /Underground
MB-22-421
236.1
238.5
2.4
8.1
19.4
H18
Pit Extension NE /Underground
MB-22-421
Including
237.0
238.0
1.0
18.2
18.2
H18
Pit Extension NE /Underground
MB-22-423
467.5
474.5
7.0
0.9
6.6
H12
Depth Extension
MB-22-429
657.9
665.4
7.5
1.1
8.1
New Vertical
Depth Extension
MB-22-429
Including
657.9
658.6
0.7
7.2
5.0
New Vertical
Depth Extension
MB-22-429
786.5
789.6
3.1
3.3
10.1
H12
Depth Extension
MB-22-429
Including
788.6
789.6
1.0
9.8
9.8
H12
Depth Extension
MB-22-429
801.6
807.6
6.0
1.3
8.0
H12
Depth Extension
MB-22-429
Including
803.6
806.1
2.5
2.8
7.0
H12
Pit Infill / Underground
MB-22-430
271.9
275.9
4.0
10.2
40.7
H1
Pit Infill / Underground
MB-22-430
Including
272.9
274.0
1.1
13.9
15.3
H1
Pit Infill / Underground
MB-22-430
and Including
275.4
275.9
0.5
48.6
24.3
H1
Pit Infill
MB-22-431
91.0
93.9
2.9
4.4
12.9
H8
Pit Infill
MB-22-431
and Including
92.1
93.3
1.2
6.0
7.2
H8
Pit Infill / Underground
MB-22-433
274.7
282.6
7.9
12.8
101.5
H1
Pit Infill / Underground
MB-22-433
Including
276.5
279.3
2.8
29.1
81.6
H1
Pit Infill / Underground
MB-22-435
290.2
297.2
7.0
1.0
6.8
H1
Pit Infill / Underground
MB-22-435
Including
292.8
295.4
2.6
2.1
5.5
H1
Pit Infill
MB-22-438
180.3
182.7
2.4
5.8
14.0
H8
Pit Infill
MB-22-438
Including
181.2
181.7
0.5
15.8
7.9
H8
Pit Infill / Underground
MB-22-444
281.5
289.4
7.9
2.1
16.4
H1
Pit Infill / Underground
MB-22-444
Including
284.5
286.4
1.9
6.6
12.5
H1
Pit Infill / Underground
MB-22-447
212.7
214.4
1.7
3.8
6.4
1000
Pit Infill / Underground
MB-22-447
Including
212.7
213.9
1.2
5.2
6.2
1000
Pit Infill / Underground
MB-22-447
274.3
277.9
3.6
4.7
16.9
New H
Pit Infill / Underground
MB-22-447
Including
276.9
277.9
1.0
15.5
15.5
New H
Pit Infill / Underground
MB-22-449
270.7
278.5
7.8
2.1
16.3
H1
Pit Infill / Underground
MB-22-449
Including
274.8
276.3
1.5
8.8
13.1
H1
Pit Infill / Underground
MB-22-453
221.6
227.3
5.7
2.8
16.1
New H
Pit Infill / Underground
MB-22-453
Including
221.6
223.1
1.5
7.0
10.5
New H
Pit Infill / Underground
MB-22-455
387.9
389.4
1.5
3.6
5.4
1000
Pit Infill
MB-22-458
116.6
118.8
2.2
3.3
7.4
H8
Pit Infill
MB-22-466
29.0
31.0
2.0
3.1
6.2
D5
Pit Infill
MB-22-466
127.8
129.0
1.2
21.2
25.4
1001
Pit Infill
MB-22-466
Including
127.8
128.3
0.5
40.9
20.5
1001
Pit Infill
MB-22-469
147.0
148.0
1.0
7.7
7.7
1004
Pit Infill / Underground
MB-22-472
280.5
294.7
14.2
1.7
23.8
H1
Pit Infill / Underground
MB-22-472
Including
287.0
288.0
1.0
18.4
18.4
H1
Pit Infill
MB-22-475
90.1
92.7
2.6
2.1
5.6
H23
Pit Infill
MB-22-475
Including
92.2
92.7
0.5
10.2
5.1
H23
Pit Infill
MB-22-476
84.3
85.2
0.9
18.5
16.7
New Vertical
Pit Infill
MB-22-480
197.7
199.7
2.0
33.8
67.6
D2B
Pit Infill
MB-22-480
Including
198.2
198.7
0.5
127.5
63.8
D2B
Pit Infill / Underground
MB-22-485
231.5
236.8
5.3
1.6
8.5
New H
Pit Infill / Underground
MB-22-485
Including
232.5
233.1
0.6
10.5
6.3
New H
Pit Infill / Underground
MB-22-485
272.5
274.2
1.7
13.6
23.1
H1
Pit Infill / Underground
MB-22-485
Including
273.2
273.7
0.5
42.2
21.1
H1
Pit Infill
MB-22-492
145.9
151.2
5.3
1.1
5.8
H8
Pit Infill / Underground
MB-22-494
230.8
231.8
1.0
44.9
44.9
H1
Pit Infill / Underground
MB-22-494
Including
230.8
231.3
0.5
89.6
44.8
H1
Pit Infill
MB-22-495
152.0
157.0
5.0
1.0
5.2
D2
Pit Infill
MB-22-495
163.0
166.4
3.4
4.1
14.0
D2
Pit Infill
MB-22-495
Including
164.0
165.7
1.7
8.1
13.8
D2
Pit Infill / Underground
MB-22-495
225.4
228.3
2.9
2.0
5.7
New H
Pit Infill
MB-22-497
60.7
61.3
0.6
42.6
25.6
1003
Pit Infill
MB-22-498
36.8
37.8
1.0
5.5
5.5
D2
Pit Infill
MB-22-498
45.8
47.6
1.8
4.1
7.5
D2
Pit Infill
MB-22-500
106.2
106.7
0.5
13.8
6.9
D2
Barry Pit Sud-Ouest Ext
MB-22-509A
17.9
23.6
5.7
10.7
60.8
H6
Barry Pit Sud-Ouest Ext
MB-22-509A
Including
19.2
19.7
0.5
96.5
48.3
H6
Barry Pit Sud-Ouest Ext
MB-22-509A
and Including
22.0
22.5
0.5
8.7
4.4
H6
Pit Infill
MB-22-513
31.6
36.0
4.4
2.1
9.3
H6
Pit Infill
MB-22-513
Including
32.8
33.3
0.5
13.6
6.8
H6
Barry Pit Sud-Ouest Ext
MB-22-514
39.1
48.5
9.4
1.1
10.5
H6
Barry Pit Sud-Ouest Ext
MB-22-514
Including
40.3
41.1
0.8
8.4
6.7
H6
Barry Pit Sud-Ouest Ext
MB-22-515
40.9
46.5
5.6
0.9
5.3
H6
Pit Infill
MB-22-516
32.8
35.6
2.8
5.4
15.1
D2
Pit Infill
MB-22-516
Including
33.9
34.5
0.6
23.7
14.2
D3
Pit Infill
MB-22-516
46.3
50.0
3.7
3.2
11.8
D2
Pit Infill
MB-22-516
Including
46.9
47.4
0.5
18.5
9.3
D3
Barry Pit Sud-Ouest Ext
MB-22-517
99.6
106.0
6.4
1.3
8.0
H8
Barry Pit Sud-Ouest Ext
MB-22-517
Including
100.2
101.0
0.8
7.2
5.8
H8
Barry Pit Sud-Ouest Ext
MB-22-518
19.2
28.0
8.8
1.5
13.2
H6
Underground Infill
MB-22-524
121.6
126.9
5.3
2.5
13.0
D4
Underground Infill
MB-22-524
Including
122.2
124.1
1.9
6.1
11.5
D4
Underground Infill
MB-22-524
277.5
279.7
2.2
2.7
5.9
D2
Underground Infill
MB-22-525
469.6
470.4
0.8
11.7
9.4
H12
Program
Hole ID
From
(m)
To
(m)
Length
(m)
Grade
(g/t Au)
Metal
Factor
(length *
grade)
Zone
Underground Infill
MB-22-526A
172.2
194.4
22.2
1.3
27.9
D4
Underground Infill
MB-22-526A
Including
180.4
183.1
2.7
5.1
13.8
D4
Underground Infill
MB-22-526A
322.2
324.7
2.5
2.1
5.2
D4
Underground Infill
MB-22-526A
507.9
515.7
7.8
2.6
20.6
H12
Underground Infill
MB-22-526A
Including
508.4
510.9
2.5
7.3
18.3
H12
Underground Infill
MB-22-527A
289.3
297.4
8.1
2.2
17.9
H13
Underground Infill
MB-22-527A
Including
289.3
293.9
4.6
3.5
16.2
H13
Underground Infill
MB-22-527A
425.9
430.4
4.5
1.3
5.7
H3
Underground Infill
MB-22-527A
522.6
524.7
2.1
3.8
8.0
H12
Underground Infill
MB-22-528A
442.5
443.5
1.0
5.6
5.6
H3
Underground Infill
MB-22-528A
Including
443.0
443.5
0.5
10.8
5.4
H3
Underground Infill
MB-22-528A
530.4
535.4
5.0
2.4
12.1
H12
Underground Infill
MB-22-528A
Including
531.7
532.3
0.6
14.1
8.5
H12
Underground Infill
MB-22-529A
155.9
158.9
3.0
6.0
18.0
AB16
Underground Infill
MB-22-529A
Including
156.9
157.9
1.0
17.8
17.8
AB16
Underground Infill
MB-22-529A
196.3
198.6
2.3
4.9
11.4
AB23
Underground Infill
MB-22-529A
239.4
241.5
2.1
79.9
167.8
New H
Underground Infill
MB-22-529A
Including
239.4
239.9
0.5
333.0
166.5
New H
Underground Infill
MB-22-529A
267.8
269.9
2.1
9.5
20.0
800
Underground Infill
MB-22-529A
423.0
429.0
6.0
1.8
11.0
H3
Underground Infill
MB-22-529A
Including
424.5
426.0
1.5
5.1
7.6
H3
Underground Infill
MB-22-530A
339.9
346.5
6.6
3.6
23.9
H1
Underground Infill
MB-22-531
246.7
250.4
3.7
3.5
12.9
800
Underground Infill
MB-22-531
Including
248.9
249.9
1.0
10.3
10.3
800
Underground Infill
MB-22-531
484.0
487.8
3.8
3.1
12.0
H10
Underground Infill
MB-22-531
Including
485.5
487.1
1.6
6.8
10.9
H10
Underground Infill
MB-22-532
132.9
138.6
5.7
0.9
5.4
H26
Underground Infill
MB-22-532
152.0
164.0
12.0
1.6
19.5
D4
Underground Infill
MB-22-532
Including
155.6
156.2
0.6
10.2
6.1
D4
Underground Infill
MB-22-534
185.0
198.8
13.8
2.5
34.0
800
Underground Infill
MB-22-534
Including
185.0
187.9
2.9
5.3
15.5
800
Underground Infill
MB-22-534
395.4
398.7
3.3
4.3
14.1
H3
Underground Infill
MB-22-534
Including
396.1
396.9
0.8
13.8
11.0
H3
Underground Infill
MB-22-537
48.8
51.6
2.8
1.9
5.4
New H
Underground Infill
MB-22-537
111.0
112.8
1.8
2.9
5.3
AB16
Underground Infill
MB-22-537
165.0
168.5
3.5
2.5
8.7
AB23
Underground Infill
MB-22-537
200.2
202.3
2.1
4.8
10.2
800
Underground Infill
MB-22-537
Including
201.8
202.3
0.5
11.4
5.7
800
Underground Infill
MB-22-537
480.2
481.2
1.0
6.0
6.0
H12
Underground Infill
MB-22-538
197.5
198.5
1.0
15.5
15.5
H17
Underground Infill
MB-22-538
202.5
204.1
1.6
6.8
10.9
H6
Underground Infill
MB-22-538
208.9
209.5
0.6
11.5
6.9
H6
Underground Infill
MB-22-539A
70.0
72.3
2.3
2.5
5.7
AB15
Underground Infill
MB-22-539A
147.7
148.2
0.5
14.1
7.1
AB05
Underground Infill
MB-22-539A
278.2
281.5
3.3
12.9
42.5
H1
Underground Infill
MB-22-539A
Including
279.4
280.5
1.1
31.3
34.4
H1
Program
Hole ID
From
(m)
To
(m)
Length
(m)
Grade
(g/t Au)
Metal
Factor
(length *
grade)
Zone
Notes:
1)
The meterage represents the actual length of the drilled lengths.
2)
Estimated true widths for the Barry interpreted zones are as follows:
D series, AB series, H series 70% to 90% of core length, 800 series
50% to 70% of core length.
3)
The mineralized intervals listed are above 0.5 g/t Au and with metal factor (grades x thickness) above 5.
Quality Control and Reporting Protocols
The Barry project's drill core gold analyses are performed at the Company's Bachelor Mine analytical
laboratory (the "
Laboratory
") And at AGAT Laboratories in Val d'or.
The Company employs a rigorous
QA-QC analysis program that meets industry standards.
The analyses are carried out by fire assay
(A.A.) with atomic absorption finish at Bachelor Mine Laboratory and with gravimetric finish for assay
above 10g/t Au at AGAT laboratories.
Blanks, duplicates, and certified reference standards are inserted
into the sample stream to monitor the Laboratory's performance.
The Company's QA-QC program
requires that at least 10% of samples be analyzed by an independent laboratory.
These verification
samples are sent to ALS Minerals laboratory facility located in Val-d'Or, Quebec.
The verifications show
a high degree of correlation with the Laboratory's results.
Qualified Persons
Donald Trudel, P.Geo., (OGQ # 813) Director of Geology of the Company oversees all exploration
activities on the Barry property and has compiled and approved the information contained in this press
release.
Mr. Trudel is a qualified person as defined by National Instrument 43-101
on standards of disclosure for mineral projects.
About Bonterra Resources Inc.
Bonterra is a Canadian gold exploration company with a large portfolio of advanced exploration assets
anchored by a central milling facility in Quebec, Canada. The Company has four main assets, Gladiator,
Barry, Moroy, and Bachelor that collectively have a total of 1.24 million ounces in Measured and
Indicated categories, and 1.78 million ounces in Inferred category.
Importantly, the Company owns the
only permitted and operational gold mill in the region.
Bonterra is focused on graduating from advanced
exploration to a development company to deliver shareholder value.
FOR ADDITIONAL INFORMATION
Marc-André Pelletier, President & CEO
2872 Sullivan Road, Suite 2, Val d'Or, Quebec J9P 0B9
819-279-9304 | Website:
www.btrgold.com
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture
Exchange) accepts responsibility for the adequacy or accuracy of this release.
Cautionary and Forward-Looking Statements
Caution regarding forward-looking statements
This press release contains "forward-looking information" that is based on Bonterra's current expectations, estimates, forecasts and projections.
This forward-looking information includes, among other things, statements with respect to Bonterra's exploration and development plans and placing
the Bachelor-Moroy deposit under long-term care and maintenance. The words "will", "anticipated", "plans" or other similar words and phrases are
intended to identify forward-looking information. This forward-looking information includes namely information with respect to the planned exploration
programs and the potential growth in mineral resources. Exploration results that include drill results on wide spacings may not be indicative of the
occurrence of a mineral deposit and such results do not provide assurance that further work will establish sufficient grade, continuity, metallurgical
characteristics and economic potential to be classed as a category of mineral resource. The potential quantities and grades of drilling targets are
conceptual in nature and, there has been insufficient exploration to define a mineral resource, and it is uncertain if further exploration will result in