# Relationship history for MSHA mine 3901320

Current hierarchy: **Scott  Hanlon → Hanlon Brothers → Unit # 1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Hanlon Brothers → Unit # 1; 1985-04-01 to 2022-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Guy  Hanlon  et al → Unit # 1; 1985-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Guy  Hanlon  et al → Hanlon Brothers; 1985-04-01 to 2022-05-11; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Hanlon  et al → Hanlon Brothers; 1985-04-01 to 2022-05-11; source msha-controller-operator-history
- **operator_operates_mine:** Hanlon Brothers → Unit # 1; 2022-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Hanlon → Unit # 1; 2022-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Hanlon → Hanlon Brothers; 2022-05-12 to current/open; source msha-controller-operator-history