Seabridge Gold has completed an updated preliminary feasibility study (PFS) for its Kerr-Sulphurets-Mitchell (KSM) project located in northern British Columbia, Canada.

According to the PFS, the KSM project has higher estimated mineral reserves of 27% for gold, 42% for copper, 61% for silver and 22% for molybdenum.

The study extends mine life to 52 years from 37, with 2.2 billion tonnes of reserves at a throughput of 120,000 tonnes per day.

The estimated cash operating costs are minus $79 per ounce while total costs including all capital and closure costs are $220 per ounce.

Projected capital costs are in line with those of comparable, large-scale undeveloped gold-copper projects.