@The Belt supplies much of the solar system with metals, water, fuel, volatiles, and industrial materials.
Mining remains central to its economy, but @Belters also work as @Pilots , engineers, traders, salvagers, @Medics, station technicians, shipbuilders, scientists, couriers, and navigators.
Most large operations are financed by Terran or Martian interests. Contracts may provide equipment and market access while leaving workers trapped by debt, transport fees, maintenance charges, or company-controlled prices.
Independent crews enjoy greater freedom but face enormous risks. A failed survey, damaged engine, or disputed claim can destroy years of work. Salvage and smuggling often occupy the uncertain boundary between necessity and crime.
Belter markets rely on currency, barter, favors, labor, information, and access. A replacement filter or verified navigation route may be more valuable than a large sum of money that cannot solve an immediate problem.