# Relationship history for MSHA mine 3609236

Current hierarchy: **John D  Broda; John  Broda → High Mountain Coal Company → Mountain Lilly Job**

- 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:** John  Broda et al → Mountain Lilly Job; 1998-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** High Mountain Coal Company → Mountain Lilly Job; 2004-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Broda et al → High Mountain Coal Company; 2004-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John D  Broda et al → High Mountain Coal Company; 2004-04-27 to current/open; source msha-controller-operator-history