Returns resources and reserves data for a single province, nested by year then by commodity. Each commodity entry contains the full breakdown: exploration_target, total_inventory, resources, reserves, and unit.
commodity_type values: Coal, Gold, Silver, Copper, Nickel, Cobalt, Tin.API key passed directly in the Authorization header (without Bearer prefix).
Exact province name (e.g., Kalimantan Timur). Case-insensitive.
Restrict results to a specific commodity.
Restrict results to a specific year.
Nested resources and reserves data: {province, data: {year: {commodity: {...}}}}.