# Relationship history for MSHA mine 4608987

Current hierarchy: **MELISSA  CLINE → Glow Worm Coal Co., Inc. → No 35B**

- 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:** Thomas W  Lusk → No 35B; 2001-06-22 to 2005-01-11; source msha-controller-operator-history
- **operator_operates_mine:** Glow Worm Coal Co., Inc. → No 35B; 2003-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas W  Lusk → Glow Worm Coal Co., Inc.; 2003-03-27 to 2005-01-11; source msha-controller-operator-history
- **controller_controls_mine:** MELISSA  CLINE → No 35B; 2005-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MELISSA  CLINE → Glow Worm Coal Co., Inc.; 2005-01-12 to current/open; source msha-controller-operator-history