# Relationship history for MSHA mine 3000039

Current hierarchy: **Heidelberg Materials AG → Hanson Aggregates New York LLC. → Middleville 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Hanson PLC → Middleville Plant; 1988-11-14 to 2007-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates New York Inc → Middleville Plant; 1996-10-01 to 2004-03-28; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Aggregates New York Inc; 1996-10-01 to 2004-03-28; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates Inc → Middleville Plant; 2004-03-29 to 2004-06-20; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Aggregates Inc; 2004-03-29 to 2004-06-20; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates New York LLC. → Middleville Plant; 2004-06-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Aggregates New York LLC.; 2004-06-21 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Middleville Plant; 2007-08-23 to 2021-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Hanson Aggregates Inc; 2007-08-23 to 2004-06-20; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Middleville Plant; 2007-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Hanson Aggregates New York Inc; 2007-08-23 to 2004-03-28; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Hanson Aggregates New York LLC.; 2007-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Martin Marietta Materials Inc → Middleville Plant; 2021-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → Hanson Aggregates Inc; 2021-10-01 to 2004-06-20; source msha-controller-operator-history