METHODOLOGY
Soviet ГКЗ to JORC: a practical conversion guide
A working geologist's guide to converting Soviet GKZ A/B/C₁/C₂/P resource categories into modern JORC and KAZRC classifications. Practical mapping rules, the C₁ ≠ Measured trap, balance-vs-off-balance reserve treatment, and why Pulkovo 1942 → WGS-84 reprojection is harder than it looks. Drawn from 4,859 documents digitised across CoreElement.AI deployments in Kazakhstan and Russia.