# Relationship history for MSHA mine 5001974

Current hierarchy: **American Standard Metal LLC; Daniel  Plano → Anvil Creek LLC → Anvil Creek Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Anvil Creek LLC → Anvil Creek Mine; 2012-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Daniel  Plano et al → Anvil Creek Mine; 2012-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel  Plano et al → Anvil Creek LLC; 2012-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Standard Metal LLC et al → Anvil Creek LLC; 2012-03-15 to current/open; source msha-controller-operator-history