# Relationship history for MSHA mine 1701054

Current hierarchy: **Erik James  Hanson; Owen Michael  Hanson → Hanson and Son Earth Works LLC → Hanson and Son Earth Works LLC**

- 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:** Hanson and Son Earth Works LLC → Hanson and Son Earth Works LLC; 2021-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Owen Michael  Hanson et al → Hanson and Son Earth Works LLC; 2021-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Owen Michael  Hanson et al → Hanson and Son Earth Works LLC; 2021-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Erik James  Hanson et al → Hanson and Son Earth Works LLC; 2021-12-01 to current/open; source msha-controller-operator-history