# Relationship history for MSHA mine 1518430

Current hierarchy: **Broe Companies Inc → Chas Coal LLC → Chas #8 HWM**

- 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:** Marnat Energy Inc et al → Chas #8 HWM; 2001-01-16 to 2008-04-22; source msha-controller-operator-history
- **operator_operates_mine:** Chas Coal LLC → Chas #8 HWM; 2001-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marnat Energy Inc et al → Chas Coal LLC; 2001-08-01 to 2008-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Broe Companies Inc → Chas #8 HWM; 2008-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Broe Companies Inc → Chas Coal LLC; 2008-04-23 to current/open; source msha-controller-operator-history