# Relationship history for MSHA mine 4606202

Current hierarchy: **Jackson Kit E → Pammlid Coal Company → Mine Number 5b**

- 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:** Jackson Kit E → Mine Number 5b; 1979-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brooks Run Coal Company → Mine Number 5b; 1980-08-01 to 1981-09-07; source msha-controller-operator-history
- **controller_controls_mine:** El Paso Energy Corp → Mine Number 5b; 1980-08-01 to 1996-03-10; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Brooks Run Coal Company; 1980-08-01 to 1981-09-07; source msha-controller-operator-history
- **operator_operates_mine:** Pammlid Coal Company → Mine Number 5b; 1981-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jackson Kit E → Pammlid Coal Company; 1981-09-08 to current/open; source msha-controller-operator-history