# Relationship history for MSHA mine 4606479

Current hierarchy: **Romie J  Bailey → Craft Coal Company → Stone Run 6a**

- 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:** Romie J  Bailey → Stone Run 6a; 1981-02-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Magic Sewell Coal Company → Stone Run 6a; 1982-01-01 to 1983-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Fry E B Et Al → Stone Run 6a; 1982-01-01 to 1983-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Fry E B Et Al → Magic Sewell Coal Company; 1982-01-01 to 1983-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Craft Coal Company → Stone Run 6a; 1983-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Romie J  Bailey → Craft Coal Company; 1983-03-15 to current/open; source msha-controller-operator-history