# Relationship history for MSHA mine 1515259

Current hierarchy: **Mc Ginnis Ted → Long Fork Development 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

- **controller_controls_mine:** Stepp Orville-James Jude Et Al → No 1; 1980-10-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ashley Coal Company Inc → No 1; 1985-06-01 to 1986-04-07; source msha-controller-operator-history
- **controller_controls_operator:** Stepp Orville-James Jude Et Al → Ashley Coal Company Inc; 1985-06-01 to 1986-04-07; source msha-controller-operator-history
- **operator_operates_mine:** Ashley Coal Company Inc → No 1; 1986-04-08 to 1987-04-07; source msha-controller-operator-history
- **controller_controls_mine:** Cassady Thomas → No 1; 1986-04-08 to 1987-04-07; source msha-controller-operator-history
- **controller_controls_operator:** Cassady Thomas → Ashley Coal Company Inc; 1986-04-08 to 1987-04-07; source msha-controller-operator-history
- **operator_operates_mine:** Long Fork Development Inc → No 1; 1987-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Ginnis Ted → No 1; 1987-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Ginnis Ted → Long Fork Development Inc; 1987-04-08 to current/open; source msha-controller-operator-history