# Relationship history for MSHA mine 4604986

Current hierarchy: **Imperial-Pacific Investments Inc → Mullins Coal Company Inc → Maryetta Mine 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:** Maryetta Coal Company → Maryetta Mine No 1; 1975-12-01 to 1977-04-26; source msha-controller-operator-history
- **controller_controls_mine:** Daugherty Ernest → Maryetta Mine No 1; 1975-12-01 to 1983-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Daugherty Ernest → Maryetta Coal Company; 1975-12-01 to 1977-04-26; source msha-controller-operator-history
- **operator_operates_mine:** Maryetta Coal Company → Maryetta Mine No 1; 1977-04-27 to 1988-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Stollings Willie R → Maryetta Mine No 1; 1977-04-27 to 1988-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Stollings Willie R → Maryetta Coal Company; 1977-04-27 to 1988-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Imperial-Pacific Investments Inc → Maryetta Mine No 1; 1985-03-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mullins Coal Company Inc → Maryetta Mine No 1; 1988-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Imperial-Pacific Investments Inc → Mullins Coal Company Inc; 1988-09-01 to current/open; source msha-controller-operator-history