# Relationship history for MSHA mine 1513808

Current hierarchy: **Bowling Charles-Rodney Tackett → Firestone Mining Inc → 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:** Lucas James H → 1; 1980-11-01 to 1992-08-11; source msha-controller-operator-history
- **operator_operates_mine:** 3 M Development & Coal Corp → 1; 1982-11-01 to 1992-08-11; source msha-controller-operator-history
- **controller_controls_operator:** Lucas James H → 3 M Development & Coal Corp; 1982-11-01 to 1992-08-11; source msha-controller-operator-history
- **operator_operates_mine:** Firestone Mining Inc → 1; 1992-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bowling Charles-Rodney Tackett Et Al → 1; 1992-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bowling Charles-Rodney Tackett Et Al → Firestone Mining Inc; 1992-08-12 to current/open; source msha-controller-operator-history