# Relationship history for MSHA mine 4604733

Current hierarchy: **Mason Martin E → Nephi Coal Properties Ltd → Gut Fork Mine**

- 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:** Jasper Mining Inc → Gut Fork Mine; 1975-08-05 to 1976-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Clay Charles C → Gut Fork Mine; 1975-08-05 to 1976-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Clay Charles C → Jasper Mining Inc; 1975-08-05 to 1976-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Jasper Mining Inc → Gut Fork Mine; 1976-12-01 to 1978-10-16; source msha-controller-operator-history
- **controller_controls_mine:** Stollings James D → Gut Fork Mine; 1976-12-01 to 1978-10-16; source msha-controller-operator-history
- **controller_controls_operator:** Stollings James D → Jasper Mining Inc; 1976-12-01 to 1978-10-16; source msha-controller-operator-history
- **operator_operates_mine:** Nephi Coal Properties Ltd → Gut Fork Mine; 1978-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mason Martin E → Gut Fork Mine; 1978-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mason Martin E → Nephi Coal Properties Ltd; 1978-10-17 to current/open; source msha-controller-operator-history