# Relationship history for MSHA mine 3800567

Current hierarchy: **Heidelberg Materials AG → Heidelberg Materials Southeast Agg., LLC → Pelham Quarry**

- 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:** Pelham Stone Company → Pelham Quarry; 1980-05-01 to 1989-05-10; source msha-controller-operator-history
- **controller_controls_mine:** Charles L Satterfield → Pelham Quarry; 1980-05-01 to 1989-05-10; source msha-controller-operator-history
- **controller_controls_operator:** Charles L Satterfield → Pelham Stone Company; 1980-05-01 to 1989-05-10; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Pelham Quarry; 1988-11-14 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Pelham Quarry; 1988-11-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pioneer International Ltd → Pelham Quarry; 1989-01-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pioneer Mid-Atlantic Inc → Pelham Quarry; 1989-05-11 to 2000-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Pioneer International Ltd → Pioneer Mid-Atlantic Inc; 1989-05-11 to 2000-08-03; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates East Inc → Pelham Quarry; 2000-08-04 to 2001-09-12; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Aggregates East Inc; 2000-08-04 to 2001-09-12; source msha-controller-operator-history
- **operator_operates_mine:** Heidelberg Materials Southeast Agg., LLC → Pelham Quarry; 2001-09-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Heidelberg Materials Southeast Agg., LLC; 2001-09-13 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Pelham Quarry; 2007-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Heidelberg Materials Southeast Agg., LLC; 2007-08-23 to current/open; source msha-controller-operator-history