# Relationship history for MSHA mine 1601414

Current hierarchy: **George  Douglass Jr → Pontchartrain Materials Corp LLC → Honey Island Wet Plant**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** George  Douglass Jr → Honey Island Wet Plant; 1992-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pontchartrain Materials Corp LLC → Honey Island Wet Plant; 2004-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George  Douglass Jr → Pontchartrain Materials Corp LLC; 2004-08-17 to current/open; source msha-controller-operator-history