Hill of Value Analysis

NPV surface: Production Rate vs Cut-Off Grade. Range from Parameters stage capacities.

Production Rate & Schedule Coupling

Adjust parameters below, then click Run|Pit:VC: $42.0/t+ Sust $8.0/t = $50.0/t|Sust CapEx:$M/yr= $8.0/t

Production Rate (ore)8,000 t/d

extr: 12,000haul: 10,000proc: 9,000logi: 8,000

Manual:t/dRange: 4,000-15,000 (from Params)

Standalone analysis

Peak NPV

$5,842M

15,000 t/d | $80/t | 7.4yr

NPV Surface ($M)

Rate \ Cut-off	$20/t	$30/t	$40/t	$50/t	$60/t	$80/t	$100/t	$120/t	$150/t
4,000	2118	2275	2432	2588	2745	2996	3059	2949	2739
5,000	2664	2828	2984	3134	3276	3531	3571	3411	3117
6,000	3062	3238	3405	3563	3709	3968	3984	3776	3409
7,000	3401	3585	3759	3922	4071	4330	4321	4073	3642
8,000 ◀	3691	3883	4060	4226	4377	4632	4600	4314	3829
9,000	3942	4138	4318	4486	4636	4886	4835	4517	3984
10,000	4160	4358	4542	4709	4860	5105	5035	4689	4114
11,000	4350	4551	4738	4903	5055	5294	5206	4834	4227
12,000	4518	4721	4909	5074	5224	5457	5353	4959	4320
13,000	4668	4872	5060	5225	5372	5601	5485	5075	4404
14,000	4802	5007	5193	5362	5504	5732	5600	5167	4474
15,000	4919	5129	5314	5479	5626	PEAK 5842	5702	5258	4543

$2118M

$5842MRed = PEAK

NPV vs Cut-Off (at 8,000 t/d)

$20/t

$3691M

17.7yr

$30/t

$3883M

17yr

$40/t

$4060M

16.4yr

$50/t

$4226M

15.8yr

$60/t

$4377M

15.2yr

$80/t

$4632MPEAK

13.9yr

$100/t

$4600M

12.6yr

$120/t

$4314M

11.4yr

$150/t

$3829M

9.5yr

NPV vs Rate (at $50/t cut-off)

4,000

$2588M

30yr

5,000

$3134M

25.3yr

6,000

$3563M

21yr

7,000

$3922M

18yr

8,000

$4226M

15.8yr

9,000

$4486M

14yr

10,000

$4709M

12.6yr

11,000

$4903M

11.5yr

12,000

$5074M

10.5yr

13,000

$5225M

9.7yr

14,000

$5362M

9yr

15,000

$5479MPEAK

8.4yr

Key Insight

Peak at 15,000 t/d, $80/t = $5,842M. Range (4,000-15,000) from Parameters capacities.

HILL OF VALUE - RATE SLIDER - SCHEDULE COUPLING - WASTE IMPLICATIONS

NPV Optimizer

Sweeps 11 rates × 6 pits × 6 discount rates = 396 scenarios at $50/t cut-off. Finds the combination that maximizes NPV.

Optimal Combination

$6,583M

Northwest | 15,000 t/d | 4% DR | 8.4yr life

VC $38.6/t + Sust $4.2/t = $42.8/t total

Top 10 Scenarios

#	Pit	Rate	DR	VC	Sust	Total	Life	NPV	vs Best
1	Northwest	15,000	4%	$38.6	$4.2	$42.8	8.4yr	$6,583M	BEST
2	Blended	15,000	4%	$42.0	$4.2	$46.2	8.4yr	$6,464M	-2%
3	Bisha	15,000	4%	$42.3	$4.2	$46.5	8.4yr	$6,453M	-2%
4	Asheli	15,000	4%	$42.8	$4.2	$47.0	8.4yr	$6,437M	-2%
5	Harena	15,000	4%	$43.0	$4.2	$47.2	8.4yr	$6,428M	-2%
6	Hambok	15,000	4%	$43.3	$4.2	$47.5	8.4yr	$6,417M	-3%
7	Northwest	12,000	4%	$38.6	$5.3	$43.9	10.5yr	$6,298M	-4%
8	Blended	12,000	4%	$42.0	$5.3	$47.3	10.5yr	$6,183M	-6%
9	Bisha	12,000	4%	$42.3	$5.3	$47.6	10.5yr	$6,173M	-6%
10	Asheli	12,000	4%	$42.8	$5.3	$48.1	10.5yr	$6,158M	-6%

Insight: Pit Northwest at 15,000 t/d with 4% discount rate delivers the highest NPV of $6,583M. High throughput maximises value.