# Relationship history for MSHA mine 4404048

Current hierarchy: **Jackson Harold → Little Egypt Coal Company Inc → No 1 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:** Twin Bee Coal Company → No 1 Mine; 1975-03-01 to 1977-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Belcher William → No 1 Mine; 1975-03-01 to 1977-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Belcher William → Twin Bee Coal Company; 1975-03-01 to 1977-08-14; source msha-controller-operator-history
- **operator_operates_mine:** Little Egypt Coal Company Inc → No 1 Mine; 1977-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jackson Harold → No 1 Mine; 1977-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jackson Harold → Little Egypt Coal Company Inc; 1977-08-15 to current/open; source msha-controller-operator-history