# Relationship history for MSHA mine 4608794

Current hierarchy: **MELISSA  CLINE → Glow Worm Coal Company → No 30-A 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Billy R  Lee → No 30-A Mine; 1998-09-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dixs Creek Mining Company → No 30-A Mine; 1999-09-01 to 2000-11-07; source msha-controller-operator-history
- **controller_controls_operator:** Billy R  Lee → Dixs Creek Mining Company; 1999-09-01 to 2000-11-07; source msha-controller-operator-history
- **operator_operates_mine:** B D & J C Mining Inc → No 30-A Mine; 2000-11-08 to 2001-06-21; source msha-controller-operator-history
- **controller_controls_mine:** Bobby C  Powell → No 30-A Mine; 2000-11-08 to 2001-06-21; source msha-controller-operator-history
- **controller_controls_operator:** Bobby C  Powell → B D & J C Mining Inc; 2000-11-08 to 2001-06-21; source msha-controller-operator-history
- **operator_operates_mine:** Glow Worm Coal Company → No 30-A Mine; 2001-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas W  Lusk → No 30-A Mine; 2001-06-22 to 2005-01-11; source msha-controller-operator-history
- **controller_controls_operator:** Thomas W  Lusk → Glow Worm Coal Company; 2001-06-22 to 2005-01-11; source msha-controller-operator-history
- **controller_controls_mine:** MELISSA  CLINE → No 30-A Mine; 2005-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MELISSA  CLINE → Glow Worm Coal Company; 2005-01-12 to current/open; source msha-controller-operator-history