# Relationship history for MSHA mine 4604856

Current hierarchy: **Coal Arbed → Huff Energy Inc → Clarmatan Tipple**

- 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 → Clarmatan Tipple; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Peter White Coal Mining Corp → Clarmatan Tipple; 1975-07-01 to 1978-05-15; source msha-controller-operator-history
- **controller_controls_operator:** Belco Petroleum Corp → Peter White Coal Mining Corp; 1975-07-01 to 1978-05-15; source msha-controller-operator-history
- **controller_controls_mine:** Coal Arbed → Clarmatan Tipple; 1977-03-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Huff Energy Inc → Clarmatan Tipple; 1978-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coal Arbed → Huff Energy Inc; 1978-05-16 to current/open; source msha-controller-operator-history