# Relationship history for MSHA mine 4605661

Current hierarchy: **Booth Mary Ann → Mary Lynn Inc → Loadout No 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

- **controller_controls_mine:** Kelly John A → Loadout No 1; 1973-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Logan Mohawk Coal Company Inc → Loadout No 1; 1977-10-01 to 1988-11-12; source msha-controller-operator-history
- **controller_controls_operator:** Kelly John A → Logan Mohawk Coal Company Inc; 1977-10-01 to 1988-11-12; source msha-controller-operator-history
- **controller_controls_mine:** Salyers Don → Loadout No 1; 1988-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sylvia Branch Processing Inc → Loadout No 1; 1988-11-13 to 1989-06-09; source msha-controller-operator-history
- **controller_controls_operator:** Salyers Don → Sylvia Branch Processing Inc; 1988-11-13 to 1989-06-09; source msha-controller-operator-history
- **operator_operates_mine:** Mary Lynn Inc → Loadout No 1; 1989-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Booth Mary Ann → Loadout No 1; 1989-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Booth Mary Ann → Mary Lynn Inc; 1989-06-10 to current/open; source msha-controller-operator-history