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Philippines
Padcal Mine

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 Location:
15 km S from Baguio, Philippines

  Address:
Tuba
Benguet
Philippines
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Copper
  • Gold
Mining Method
  • Block caving
Production Start...
Mine Life2024
Padcal's mine life was initially projected to end by 2014 and was extended to 2022. However, after completing technical and financial studies, Philex decided to further extend Padcal Mine’s life for another two years or up to December 31, 2024. This is meant to optimize the remaining mineral resources of the Sto. Tomas II ore body.


Owners

Source: p. 6
CompanyInterestOwnership
Philex Mining Corp. (operator) 100 % Indirect

Contractors

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Deposit Type

  • Porphyry


Summary:

The different prospects within the vicinity of Padcal can be generally divided into copper-gold porphyry prospects and the gold vein prospects. Sto. Tomas II, Bumolo, Bumolo 2/Sta. Fe, Southwest, Southwest Breccia and Tapaya fall under the copper-gold porphyry prospects while Butan, Midway and Copper Queen are classified within the gold vein prospects.

Mineralization within the Sto. Tomas II orebody is associated with the various diorite porphyry stocks (Dark diorite, Clear diorite, Andesite porphyry, and Quartz diorite/Tonalite) which have intruded the basement meta-andesite wallrocks of the Pugo-Zigzag Formation. These intrusive stocks are said to be related to the diorite and dacite porphyries of the Black Mountain Quartz Diorite. Among the porphyry stocks in the area, the dark diorite (DD) is the principal ore bearing rock. The inter-mineral clear diorite on the other hand is less mineralized than DD. The andesite porphyry (AP) is characteristically low in copper but high in gold while the post-mineral quartz diorite (QD/tonalite) is almost devoid of both copper and gold. Subsequent exploration drilling activities discovered a structurally controlled gold-rich, copper-poor zone at 400-500 meter level was also discovered at the northeast fringe of the orebody. It has an apparent thickness of 117 meters along drillhole intercepts and is noted to occur in CD and some meta-andesite. Likewise a deeper gold-rich interval of post-porphyry copper-gold mineralization wa ........


Mining Methods

  • Block caving


Summary:

LHD Block Caving will be continually employed in the remainder of the operating life of Padcal. The method has been used successfully for 50 years now and has undergone modernization from its roots of slusher machines.

Load-Haul-Dump (LHD) mining is a system of ore extraction in block caving using the Low Profile Loaders. It was introduced at 908 ML on May 1996 after a series of consultation with block caving experts and by 1999, Philex became a full LHD block caving operation.

Ore passing through transfer raises that are remotely located relative to crusher stations are collected at the Re-handling Level at 840ML. The ore is then hauled by 30-tonner Low- Profile Trucks (LPTs) and subsequently dumped at LTRs that lead to the Crushing Level at 773ML.

There are two (2) jaw crushers at the 773ML, the 4-4 Crusher Station and the 2-4 Crusher Station. Ore fragments bigger than 20cm in diameter report to the crushers for size-reduction.

Ore of suitable size drops to the Haulage Level at 745ML where they are carried by five (5) Feeder Belt Conveyors (FBCs). The FBCs feed two (2) collecting bins thate discharge onto the sacrificial conveyor then to the 2.7-km long Cable Hauled Conveyor (CHC).

Finally, the ore is transported by the CHC to the surface and discharged into the dump bin at the 1015ML.


Crushing and Grinding
Source: Subscription required

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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityProductUnits202120202019201820172016
Copper Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required586573
Copper Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required273035
Gold Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Operational Metrics:

Metrics202120202019201820172016
Tonnes milled  ......  Subscription required  ......  Subscription required8,112,791 t8,516,915 t8,673,474 t9,359,161 t
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Reserves at December 31, 2021:
Padcal Mine Mineral Resources Cut-off grade = 0.274%CuEq

CategoryTonnage CommodityGradeContained MetalRecoverable Metal
Proven 24.9 Mt Copper 0.18 % M lbs 78.8 M lbs
Proven 24.9 Mt Gold 0.23 g/t oz 136,000 oz
Measured & Indicated 180 Mt Copper 0.18 % 730 M lbs
Measured & Indicated 180 Mt Gold 0.31 g/t 1,800,000 oz
Inferred 11 Mt Copper 0.17 % 43 M lbs
Inferred 11 Mt Gold 0.26 g/t 92,000 oz

Commodity Production Costs:

CommodityUnits202120202019201820172016
Total cash costs Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 2.5 / lb   2.16 / lb   1.72 / lb  
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,112 / oz   929 / oz   919 / oz  
Subscription required - Subscription is required.

Operating Costs:

Units202120202019201820172016
Direct operating costs ($/t milled) PHP 718698724705687649
Total operating costs ($/t milled) PHP  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units202120202019201820172016
Capital expenditures M PHP  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,776   1,749   1,636  
Revenue M PHP  ......  Subscription required  ......  Subscription required  ......  Subscription required 8,314   9,985   10,272  
Operating Income M PHP  ......  Subscription required  ......  Subscription required  ......  Subscription required 820   2,365   2,478  
After-tax Income M PHP  ......  Subscription required  ......  Subscription required  ......  Subscription required 608.5   1,658   -926.2  
EBITDA M PHP  ......  Subscription required  ......  Subscription required  ......  Subscription required 2,493   3,977   3,854  
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Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment as of April 30, 2013:
HME TypeSizeQuantity
Drill 3 m ....................... Subscription required
Drill (long hole) 25 m ....................... Subscription required
Load-Haul-Dump (LHD) 3 cu. m ....................... Subscription required
Load-Haul-Dump (LHD) 5 cu. m ....................... Subscription required
Load-Haul-Dump (LHD) 7 cu. m ....................... Subscription required
Rock bolter 2 m ....................... Subscription required
Rockbreaker ....................... Subscription required
Truck (dump) ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 4, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Financial Review 2018
Financial Review 2017
Feasibility Study Report 2013
Subscription required - Subscription is required.

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