1 NYSE: GSS TSX: GSC Wassa Underground: Isometric View 19500N 19300N 19100N 18900N 400 m 24217DD006 BS17-720-29 BS17DD385D3 BS17DD385D2 BS17DD308M BS17DD385D4 BS17DD315M BSDD347 BSDD351 BS17DD014A BS17DD012 BS17DD003 Decline as at Dec 31, 2017 B Shoot stopes Wassa Main Pit as at Dec 31, 2017 Grade Block model >1.9 g/t Inferred Mineral Resource N S Mother hole BS17DD3 85M 4 daughter holes BS17-745-17
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1 NYSE: GSSTSX: GSC
Wassa Underground: Isometric View
19500N
19300N
19100N
18900N
400 m
24217DD006
BS17-720-29
BS17DD385D3
BS17DD385D2
BS17DD308MBS17DD385D4
BS17DD315M
BSDD347
BSDD351
BS17DD014A
BS17DD012
BS17DD003
Decline as at Dec 31,
2017
B Shoot stopes
Wassa Main Pit as at Dec 31,
2017
Grade Block model >1.9 g/t
Inferred Mineral
Resource
N S
Mother hole
BS17DD385M
4 daughter holes
BS17-745-17
2 NYSE: GSSTSX: GSC
Wassa Underground: Plan View
B Shoot stopes
F Shoot stopes
Decline
19500N
19300N
19100N
18900N
F Shoot expected projection
B Shoot expected projection
Inferred Mineral Resource
200m
N
3 NYSE: GSSTSX: GSC
B Shoot South Drilling: 19500 N
19500 N
• Two holes, BSDD347 and BSDD351, are existing holesthat were re-entered with a diamond drill rig and theholes extended
• These two holes were targeting the F Shoot, which wasthought to project into the footwall of the B Shoot
• Both of these holes intersected dioritic intrusive rocks,where the F Shoot was interpreted to be
• Further geological work is needed to determine thegeometry of these intrusive bodies
• Drilling on this section was targeting the F Shootprojection in the footwall of the B shoot zone
• One new hole, BS17DD386M, and one historicdeepened hole, BSDD308M, were drilled ~300 m apartto test the F Shoot structure. Both holes intersectedwhat is interpreted to be the target
• Additional drilling is planned for 2018 to test betweenthese two intersections