CONTENTS

Title Page

Abstract

Introduction

Acknowledgments

Methodology

Capital costs
Operating costs
Adjustment factors
Infrastructure
Mine dilution and recovery factors
Mine life
Cost updating

Infrastructure

Access roads
Power lines

 

Open pit mine models

Haulage adjustment factor

Underground mine models

Depth factor
Block caving mine model
Cut-and-fill mine model
Room-and-pillar mine model
Shrinkage stope mine model
Sublevel longhole mine model
Vertical crater retreat mine model

 

Mill models

Tailings pond
Autoclave-CIL-electrowinning mill model
CIL-electrowinning mill model
CIP-electrowinning mill model
Countercurrent decantation-Merrill Crowe mill model
Float-roast-leach mill model
Flotation mill model, one product
Flotation mill model, two product
Flotation mill model, three product
Gravity mill model
Heap leach mill model
Solvent extraction-electrowinning mill model

Summary

References

Appendix A.-Statistical significance of total cost regression equations

Appendix B -Open pit geometry

Appendix C.-Example problem, open pit mine, CIP mill

Appendix D.-Example problem, underground cut-and-fill mine

ILLUSTRATIONS

1. Open pit mine geometry
2. Open pit capital and operating costs.
3. Underground mining capital and operating costs
4. Block caving schematic
5. Cut-and-fill schematic
6. Room-and-pillar schematic
7. Shrinkage stope schematic
8. Sublevel longhole schematic
9. Vertical crater retreat schematic
10. Milling capital and operating costs
11. Tailings dam cross section
12. Autoclave-CIL-electrowinning mill flowsheet
13.CIL electrowinning mill flowsheet
14. CIP mill flowsheet
15. Countercurrent decantation-Merrill Crowe mill flowsheet
16. Float-roast-leach mill flowsheet
17. One-product flotation mill flowsheet
18. Two-product flotation mill flowsheet
19. Three-product flotation mill flowsheet
20. Gravity mill flowsheet
21. Heap leach mill flowsheet
22. Solvent extraction-electrowinning mill flowsheet
B-1. Assumed pit shape for open pit mine models
B-2. Assumed slope of in-pit haul roads for open pit mine models

TABLES

1. Mine dilution and recovery factors
2. Historical cost indexes
3. Access road capital costs
4. Power line capital costs
5. Typical equipment list, open pit models
6. Small open pit mine model, base case
7. Large open pit mine model, base case
8. Small open pit mine model, with haulage factors
9. Large open pit mine model, with haulage factors
10. Underground mine model depth factors
11. Block caving mine model, base case
12. Cut-and-fill mine model, base case
13. Room-and-pillar mine model, base case
14. Shrinkage stope mine model, base case
15. Sublevel longhole mine model, base case
16. Vertical crater retreat mine model, base case
17. Tailings pond capital costs
18. Autoclave-CIL-electrowinning mill model
19. CIL-electrowinning mill model
20. CIP mill model 
21. Countercurrent decantation mill model
22. Float-roast-leach mill model
23. Flotation mill model, one product
24. Flotation mill model, two product
25. Flotation mill model, three product
26. Gravity mill model
27. Heap leach mill model
28. Solvent extraction -electrowinning mill model