# Relationship history for MSHA mine 4606162

Current hierarchy: **Nippon Kokan K K → Peter White Coal Mining Corp → Mohawk 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

- **controller_controls_mine:** Belco Petroleum Corp → Mohawk Mine No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Styne Carl → Mohawk Mine No 1; 1978-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Greasy Creek Coal Company Inc → Mohawk Mine No 1; 1980-05-01 to 1980-11-12; source msha-controller-operator-history
- **controller_controls_operator:** Styne Carl → Greasy Creek Coal Company Inc; 1980-05-01 to 1980-11-12; source msha-controller-operator-history
- **operator_operates_mine:** Peter White Coal Mining Corp → Mohawk Mine No 1; 1980-11-13 to 1982-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Belco Petroleum Corp → Peter White Coal Mining Corp; 1980-11-13 to 1982-02-09; source msha-controller-operator-history
- **controller_controls_mine:** Nippon Kokan K K et al → Mohawk Mine No 1; 1982-01-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Peter White Coal Mining Corp → Mohawk Mine No 1; 1982-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nippon Kokan K K et al → Peter White Coal Mining Corp; 1982-02-10 to current/open; source msha-controller-operator-history