# Relationship history for MSHA mine 3000809

Current hierarchy: **Heidelberg Materials AG → Heidelberg Materials Northeast-LLC → Greene S&G**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** B & B Builder'S Supplies Inc → Greene S&G; 1950-01-01 to 1999-03-31; source msha-controller-operator-history
- **controller_controls_mine:** James F  Barton → Greene S&G; 1950-01-01 to 1999-03-31; source msha-controller-operator-history
- **controller_controls_operator:** James F  Barton → B & B Builder'S Supplies Inc; 1950-01-01 to 1999-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Greene S&G; 1988-11-14 to 2007-08-22; source msha-controller-operator-history
- **operator_operates_mine:** B & B Ready Mix → Greene S&G; 1999-04-01 to 2010-01-28; source msha-controller-operator-history
- **controller_controls_mine:** Emil J  Galasso et al → Greene S&G; 1999-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Emil J  Galasso et al → B & B Ready Mix; 1999-04-01 to 2010-01-28; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Greene S&G; 2007-08-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Saunders Concrete → Greene S&G; 2010-01-29 to 2017-08-27; source msha-controller-operator-history
- **controller_controls_mine:** Michael T  Saunders → Greene S&G; 2010-01-29 to 2014-01-28; source msha-controller-operator-history
- **controller_controls_operator:** Michael T  Saunders → Saunders Concrete; 2010-01-29 to 2014-01-28; source msha-controller-operator-history
- **controller_controls_mine:** Tracy  Saunders → Greene S&G; 2014-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tracy  Saunders → Saunders Concrete; 2014-01-29 to 2017-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates New York LLC → Greene S&G; 2017-08-28 to 2026-06-14; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Hanson Aggregates New York LLC; 2017-08-28 to 2026-06-14; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Aggregates New York LLC; 2017-08-28 to 2007-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Heidelberg Materials Northeast-LLC → Greene S&G; 2026-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Heidelberg Materials Northeast-LLC; 2026-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Heidelberg Materials Northeast-LLC; 2026-06-15 to 2007-08-22; source msha-controller-operator-history