The production cost is important in the gold mining sector as this helps to determine profitability. There are three main indicators used; C1 Cash Costs, All-In Sustaining Costs (AISC), and All-In Costs (AIC). The C1 cash cost is operational costs, the AISC is expenses needed to keep the same production levels while the AIC measures sustaining and expansion costs.
The C1 cash cost measure allows one to gauge the costs incurred in daily production activities. The measure includes mining costs, processing costs, and administrative costs at the mine-site level, minus any by-product revenue. Therefore, the C1 measure is limited as it does not include any other costs incurred apart from daily operational costs.
The introduction of AISC was necessary to address the limitations of C1 (Trench et al., 2024). The AISC framework gives an exhaustive depiction of the cost of maintaining operations in that it includes administrative overheads, reclamation, and sustaining capital expenditures along with C1. Finally, the use of AISC allows for understanding of the total cost of maintaining the current production level.
All-In Costs (AIC) is the most exhaustive measure when it comes to financial indicators. Building on the AISC, the AIC takes into account all expenditures related to growth within the organization. Thus, all expenditures relating to sustaining capital and the creation of new mines fall under this category.
The major variations between these indicators lie in their scope. C1 is the most limited indicator, which measures the efficiency solely at the mine level. AISC takes a more reasonable approach, taking into consideration the capital needed to operate the business. On the other hand, AIC encompasses all expenses, including investments for the future. Obviously, the cost per ounce increases progressively from C1 through AISC to AIC.
These metrics are applied by investors to understand the real economic situation at producers. C1 helps in comparing the efficiency of mining operations, while AISC is preferred to calculate the profitability of businesses and its ability to generate cash flow. At the same time, the metric AIC becomes widely used to estimate whether the growth plans of miners make sense economically.
References
Trench, A., Baur, D., Ulrich, S., & Sykes, J. P. (2024). Gold Production and the Global Energy Transition—A Perspective. Sustainability, 16, 5951. https://doi.org/10.3390/su16145951
