# Relationship history for MSHA mine 1510838

Current hierarchy: **M Lynn  Parrish → East Kentucky Cannel Coal Inc → Warm Glow Strip**

- 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:** East Kentucky Cannel Coal Inc → Warm Glow Strip; 1977-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** M Lynn  Parrish → Warm Glow Strip; 1977-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** M Lynn  Parrish → East Kentucky Cannel Coal Inc; 1977-08-01 to current/open; source msha-controller-operator-history