# Relationship history for MSHA mine 4001101

Current hierarchy: **Bowlin W H → W H Bowlin Coal Company → Jellico Tipple #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Appalachian Contracting Company → Jellico Tipple #1; 1950-01-01 to 1977-03-15; source msha-controller-operator-history
- **controller_controls_mine:** Kaneb Services Inc → Jellico Tipple #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kaneb Services Inc → Appalachian Contracting Company; 1950-01-01 to 1977-03-15; source msha-controller-operator-history
- **controller_controls_mine:** Bowlin W H → Jellico Tipple #1; 1976-06-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** W H Bowlin Coal Company → Jellico Tipple #1; 1977-03-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bowlin W H → W H Bowlin Coal Company; 1977-03-16 to current/open; source msha-controller-operator-history