# Relationship history for MSHA mine 1514787

Current hierarchy: **John L  Sexton → Southland Mineral Inc → 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

- **operator_operates_mine:** Jimmy Dawn Coal Inc → No 1; 1984-07-01 to 1987-02-24; source msha-controller-operator-history
- **controller_controls_mine:** Davis James O Jr → No 1; 1984-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Davis James O Jr → Jimmy Dawn Coal Inc; 1984-07-01 to 1987-02-24; source msha-controller-operator-history
- **operator_operates_mine:** Southland Mineral Inc → No 1; 1987-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John L  Sexton → No 1; 1987-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John L  Sexton → Southland Mineral Inc; 1987-02-25 to current/open; source msha-controller-operator-history