In the wake of the closure of large-scale underground mining operations at Evander in May 2018, Pan African’s two most important producing assets are Barberton underground (41% of production in H120) and Elikhulu (32%).
An analysis of Barberton underground’s H120 performance plus our expectations for FY20, by half-year, is provided in Exhibit 3, below. Of note is the fact that the operation recorded its highest level of tonnes milled during a six-month period since at least H112. In addition, it recorded its highest adjusted EBITDA number since H117 and easily covered capex of ZAR107.0m, despite facing challenging geological conditions at Fairview and the need to put enhanced security initiatives in place in order to curtail illegal mining activities.
Exhibit 3: Barberton underground operational statistics, H116-H220e
|
H116 |
H216 |
H117 |
H217 |
H118 |
H218 |
H119 |
H219 |
H120e |
H120 |
H220e |
Tonnes milled underground (t) |
133,890 |
124,515 |
123,168 |
123,747 |
124,969 |
112,862 |
127,858 |
119,777 |
126,195 |
117,545 |
126,195 |
Head grade underground (g/t) |
10.90 |
11.11 |
9.40 |
10.20 |
8.70 |
12.07 |
9.60 |
9.88 |
10.26 |
*9.70 |
10.26 |
Underground gold contained (oz) |
46,921 |
44,467 |
37,224 |
40,574 |
34,956 |
43,803 |
39,463 |
38,052 |
41,626 |
36,648 |
41,626 |
Tonnes milled surface (t) |
5,540 |
4,438 |
0 |
0 |
0 |
0 |
12,471 |
33,158 |
38,879 |
47,231 |
38,879 |
Head grade surface (g/t) |
1.10 |
1.32 |
0.00 |
0.00 |
0.00 |
0.00 |
2.30 |
1.62 |
2.16 |
*2.16 |
2.16 |
Surface gold contained (oz) |
196 |
189 |
0 |
0 |
0 |
0 |
922 |
1,729 |
2,703 |
3,283 |
2,703 |
Tons milled (t) |
139,430 |
128,953 |
123,168 |
123,747 |
124,969 |
112,862 |
140,329 |
152,935 |
165,074 |
164,776 |
165,074 |
Head grade (g/t) |
10.60 |
10.77 |
9.40 |
10.20 |
8.70 |
12.07 |
8.95 |
8.09 |
8.35 |
7.54 |
8.35 |
Contained gold (oz) |
47,117 |
44,656 |
37,224 |
40,574 |
34,956 |
43,803 |
40,386 |
39,780 |
44,329 |
39,932 |
44,329 |
Recovery (%) |
92.0 |
92.0 |
93.0 |
91.9 |
93.0 |
93.5 |
94.0 |
92.5 |
92.5 |
92.0 |
92.5 |
Production underground (oz) |
43,487 |
40,941 |
34,471 |
37,292 |
32,159 |
40,966 |
37,735 |
35,129 |
41,000 |
36,737 |
41,000 |
Production calcine dumps/surface ops (oz) |
130 |
132 |
0 |
0 |
0 |
0 |
815 |
1,677 |
0 |
0 |
|
Total production (oz) |
43,617 |
41,073 |
34,471 |
37,292 |
32,159 |
40,966 |
38,550 |
36,806 |
41,000 |
36,737 |
41,000 |
Recovered grade (g/t) |
9.73 |
9.91 |
8.70 |
9.37 |
8.00 |
11.29 |
8.54 |
7.49 |
7.73 |
6.93 |
7.73 |
|
|
|
|
|
|
|
|
|
|
|
|
Gold sold (oz) |
43,617 |
41,073 |
34,471 |
37,292 |
32,159 |
40,966 |
37,829 |
37,527 |
41,000 |
36,737 |
41,000 |
Average spot price (US$/oz) |
1,113 |
1,221 |
1,268 |
1,239 |
1,288 |
1,317 |
1,220 |
1,306 |
1,482 |
1,477 |
1,565 |
|
|
|
|
|
|
|
|
|
|
|
|
Average spot price (ZAR/kg) |
486,567 |
605,265 |
570,251 |
526,341 |
554,361 |
521,029 |
556,770 |
596,180 |
700,417 |
698,031 |
743,438 |
|
|
|
|
|
|
|
|
|
|
|
|
Total cash cost (US$/oz) |
681 |
708 |
967 |
940 |
1,145 |
981 |
996 |
1,097 |
1,045 |
1,159 |
1,201 |
Total cash cost (ZAR/kg) |
297,877 |
351,358 |
434,999 |
399,081 |
492,826 |
390,220 |
454,164 |
500,214 |
494,183 |
547,594 |
570,396 |
Total cash cost (US$/t) |
213.09 |
225.38 |
270.74 |
283.19 |
294.62 |
356.03 |
268.42 |
269.10 |
259.62 |
258.39 |
298.18 |
Total cash cost (ZAR/t) |
2,898.00 |
3,480.81 |
3,787.00 |
3,740.66 |
3,945.00 |
4,405.46 |
3,860.00 |
3,817.67 |
3,817.67 |
3,797.00 |
4,406.44 |
|
|
|
|
|
|
|
|
|
|
|
|
Implied revenue (US$000) |
48,546 |
50,288 |
43,709 |
46,640 |
41,421 |
53,057 |
46,151 |
49,325 |
60,742 |
54,261 |
64,155 |
Implied revenue (ZAR000) |
660,091 |
774,505 |
611,400 |
616,296 |
554,499 |
660,698 |
655,098 |
699,398 |
893,195 |
797,598 |
948,056 |
Implied revenue (£000) |
31,671 |
34,950 |
34,207 |
37,008 |
31,422 |
38,722 |
35,652 |
38,120 |
48,985 |
43,061 |
49,391 |
|
|
|
|
|
|
|
|
|
|
|
|
Implied cash costs (US$000) |
29,711 |
29,064 |
33,347 |
35,043 |
36,819 |
40,182 |
37,667 |
41,155 |
42,856 |
42,576 |
49,222 |
Implied cash costs (ZAR000) |
404,068 |
448,861 |
466,437 |
462,895 |
493,003 |
497,209 |
534,400 |
583,855 |
630,198 |
625,654 |
727,388 |
Implied cash costs (£000) |
19,398 |
20,221 |
26,091 |
27,814 |
27,900 |
29,269 |
29,102 |
31,803 |
34,566 |
33,796 |
37,899 |
|
|
|
|
|
|
|
|
|
|
|
|
Adjusted EBITDA (ZAR000) |
180,000 |
242,400 |
240,300 |
168,300 |
72,300 |
174,700 |
137,200 |
140,700 |
|
205,100 |
|
Source: Pan African Resources, Edison Investment Research. Note: *Estimated.
Our forecasts for FY20 assume that underground operations at Barberton return to their previous levels in H220 in terms of both tonnes milled and head grade (Exhibit 3), albeit this will leave output for the full year of 77,737oz probably causing it to just miss its guidance of 100,000oz for the complex for the year (including 20,619oz from the BTRP). Readers should note that our forecasts for Barberton for H220 are inherently conservative in terms of costs – especially given our assumption of continued production from surface sources (which tends to depress average ZAR costs per tonne milled) and also in light of the costs achieved in H119, H219 and H120. Underground operations at Barberton will also benefit from the establishment of the 257 platform, thereby allowing three platforms to cycle production on the high-grade MRC orebody.
Elikhulu and other tailings operations
Exhibit 4 similarly provides our analysis of Elikhulu’s H120 performance. Notwithstanding the fact that it produced c 32% of Pan African’s gold during the period under review, it accounted for 47% of group adjusted EBITDA of ZAR712.1m and was the largest single contributor to the same, while simultaneously accounting for only a very small fraction (7%, or ZAR13.8m) of group capital expenditure. Of note was the continued high level of metallurgical recoveries in H120, despite operations being severely affected by heavy rains (eg 36cm/14” in two days) in December. Nevertheless, a new satellite pump station was successfully commissioned at the end of 2019, which is expected to increase plant feed grades and plant feed rates for the remainder of the financial year. We therefore expect H220 to be characterised by full-capacity throughput as it (re-)mines through a high-grade area of its dumps to result in full year production of 60,468oz (65,199oz in conjunction with surface material treated via the former ETRP infrastructure). In this context, it is notable that PAF reported that January had been a month of record production at Elikhulu, with output of almost 180kg (5,787oz) of gold which, pro-rata, would imply H220 production from Elikhulu alone of 34,723oz. As such, our forecasts for production (see Exhibits 4 and 6) may still prove conservative. In addition, our forecasts for H220 are conservative inasmuch as they assume a decline to life-of-mine metallurgical recoveries, whereas higher metallurgical recoveries are typically coincident with higher grades.
Exhibit 4: Elikhulu operational statistics, H119–H220e
|
H119 |
H219 |
H120e |
H120 |
H220e |
Tonnes processed tailings (t) |
3,534,278 |
7,313,931 |
7,200,000 |
6,211,028 |
7,200,000 |
Head grade tailings (g/t) |
0.30 |
0.26 |
0.28 |
*0.28 |
0.28 |
Tailings gold contained (oz) |
34,089 |
60,199 |
65,243 |
56,348 |
65,243 |
Recovery (%) |
44.0 |
51.3 |
47.8 |
52.0 |
47.8 |
Production tailings (oz) |
15,292 |
30,909 |
31,167 |
29,301 |
31,167 |
|
|
|
|
|
|
Total production (oz) |
15,292 |
30,909 |
31,167 |
29,301 |
31,167 |
Recovered grade (g/t) |
0.13 |
0.13 |
0.13 |
0.15 |
0.13 |
|
|
|
|
|
|
Gold sold (oz) |
15,292 |
30,173 |
31,167 |
29,301 |
31,167 |
Average spot price (US$/oz) |
1,216 |
1,306 |
1,482 |
1,451 |
1,565 |
|
|
|
|
|
|
Average spot price (ZAR/kg) |
563,250 |
596,180 |
700,417 |
685,680 |
743,438 |
|
|
|
|
|
|
Total cash cost (US$/oz) |
517 |
575 |
518 |
621 |
516 |
Total cash cost (ZAR/kg) |
239,639 |
262,650 |
245,104 |
293,608 |
245,155 |
Total cash cost (US$/t) |
2.24 |
2.43 |
2.24 |
2.93 |
2.23 |
Total cash cost (ZAR/t) |
32.00 |
33.70 |
33.00 |
43.00 |
33.01 |
|
|
|
|
|
|
Implied revenue (US$000) |
18,595 |
39,009 |
46,173 |
42,516 |
48,768 |
Implied revenue (ZAR000) |
267,899 |
554,999 |
678,973 |
624,898 |
720,677 |
Implied revenue (£000) |
14,365 |
30,145 |
37,237 |
33,740 |
37,545 |
|
|
|
|
|
|
Implied cash costs (US$000) |
7,912 |
17,742 |
16,158 |
18,209 |
16,082 |
Implied cash costs (ZAR000) |
114,000 |
246,492 |
237,600 |
267,600 |
237,650 |
Implied cash costs (£000) |
6,208 |
13,421 |
13,032 |
14,455 |
12,382 |
|
|
|
|
|
|
Adjusted EBITDA (ZAR000) |
145,100 |
296,300 |
|
333,100 |
|
Source: Pan African Resources, Edison Investment Research. Note: *Estimate.
Apart from Barberton and Elikhulu, the BTRP (11% of production in H120) performed closely in line with our expectations, guidance and the mine plan. At the same time, 123.9kt of material from surface feedstocks was treated through ETRP infrastructure, which, at an estimated head grade of 2.25g/t and after metallurgical recovery of 53.0%, resulted in the production of 4,731oz gold in H120 – demonstrating, among other things, the flexibility that Pan African has developed in processing such feedstocks (from either internal or external sources) now that the ETRP’s primary material stream has been diverted through the expanded Elikhulu plant.
Also at Evander, access development at the 8 Shaft Pillar has now been completed with the project producing its first gold in August 2019. To date, the 8 Shaft Pillar is reported to have produced 2,335oz gold, albeit the revenue and costs associated with the project are being capitalised until steady-state production is achieved next month.
By the end of FY20 all nine underground stoping crews will have been migrated to the 8 Shaft Pillar and PAF expects the project to contribute, on average, 30,000oz of production per annum to the group over the next three financial years at materially higher margins (see H220e column in Exhibit 5, below, which demonstrates the first effect of this) than the current remnant underground mining and vamping operations.
Exhibit 5: Evander operational statistics, H119-H220e
|
H119 |
H219 |
H120 |
H220e |
Tonnes milled (t) |
37,347 |
26,624 |
30,044 |
69,000 |
Head grade (g/t) |
7.82 |
10.01 |
*12.59 |
7.13 |
Contained gold (oz) |
9,384 |
8,572 |
12,161 |
15,816 |
Recovery (%) |
94 |
94 |
95 |
98 |
Underground production (oz) |
8,821 |
8,058 |
11,553 |
15,500 |
Production from surface sources (oz) |
0 |
0 |
0 |
0 |
Total production (oz) |
8,821 |
8,058 |
11,553 |
15,500 |
Recovered grade (g/t) |
7.35 |
9.41 |
11.96 |
6.99 |
|
|
|
|
|
Gold sold (oz) |
8,821 |
8,058 |
9,214 |
15,500 |
Average spot price (US$/oz) |
1,214 |
1,306 |
1,451 |
1,565 |
|
|
|
|
|
Average spot price (ZAR/kg) |
565,367 |
596,180 |
685,658 |
743,438 |
|
|
|
|
|
Total cash cost (US$/oz) |
1,711 |
1,814 |
1,420 |
1,200 |
Total cash cost (ZAR/kg) |
780,357 |
828,170 |
671,299 |
570,000 |
Total cash cost (US$/t) |
404.07 |
549.62 |
546.00 |
269.50 |
Total cash cost (ZAR/t) |
5,733 |
7,796 |
6,404 |
3,983 |
|
|
|
|
|
Implied revenue (US$000) |
10,709 |
10,525 |
13,370 |
24,254 |
Implied revenue (ZAR000) |
155,115 |
146,084 |
196,499 |
358,412 |
Implied revenue (£000) |
8,272 |
8,134 |
10,610 |
18,672 |
|
|
|
|
|
Implied cash costs (US$000) |
15,091 |
14,633 |
16,404 |
18,595 |
Implied cash costs (ZAR000) |
214,100 |
207,564 |
192,402 |
274,797 |
Implied cash costs (£000) |
11,659 |
11,301 |
10,393 |
14,318 |
|
|
|
|
|
Adjusted EBITDA (ZAR000) |
-58,985 |
26,085 |
64,900 |
|
Source: Pan African Resources, Edison Investment Research. Note: *Estimate.
A summary of the results of the Evander 8 Shaft Pillar project feasibility study are provided below:
■
initial capex of ZAR40.0m;
■
total capex of ZAR70.0m;
■
throughput rate of 11.5ktpm producing 30koz per annum, on average, with peak production of 39koz in the second year of operations;
■
an average all-in sustaining cost (AISC) of approximately ZAR415,000/kg, or US$900/oz over the life of the project (assuming a forex rate of ZAR14.30/US$);
■
a three-year life-of-mine; and
■
a project pre-tax NPV of US$25.8m, or 1.3 US cents per share, at a 10% real discount rate and an assumed gold price of ZAR600,000/kg, or US$1,305/oz.
Critical to the success of the project is the requirement to de-stress the orebody while mining is underway, to which end Pan African has already commissioned a grout plant at surface with the ability to pump a mixture of concrete and waste rock underground to selectively support areas of the orebody. At a recent site visit to the 8 Shaft Pillar project, attended by Edison, the short distance between the shaft bottom and the stoping areas was immediately apparent (ie 10 minutes – in sharp contrast to PAF's previous operations at 24 Level at 8 Shaft, which had an approximate 100 minute commute to the working faces), which will allow miners increased face time. In addition, the working faces are close to an intake airway (negating the need for refrigeration) and the ore will only need to be handled about four times before reaching surface (cf 22 times previously) and will require only c 4km of tramming (cf c 14km previously). This last point is significant in that Evander has a high percentage of fine gold in its ore and, historically, it has been estimated that up to 1% of this gold is lost per kilometre of distance trammed. This combination of fewer transport points and systems is therefore anticipated to have a materially beneficial effect on the overall operation’s mine call factor. The other thing that was very apparent during the site visit was the development in technology around pillar mining and especially the use of pseudo-packs and rapid reaction pit props (rather than the matt packs of old) for 'intelligent' rather than passive ground support – thereby materially de-risking the operation from both an environmental, social and governance (ESG) and a financial perspective.