# Relationship history for MSHA mine 2800819

Current hierarchy: **Heidelberg Materials AG → Heidelberg Materials Northeast LLC. → Julies Pit**

- 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:** Energy & Minerals Inc → Julies Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** S C R-Sibelco Nv et al → Julies Pit; 1950-01-01 to 2020-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Upper Township Sand & Gravel → Julies Pit; 1950-01-01 to 1984-01-15; source msha-controller-operator-history
- **controller_controls_mine:** Robert C  Thomson → Julies Pit; 1950-01-01 to 1984-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Robert C  Thomson → Upper Township Sand & Gravel; 1950-01-01 to 1984-01-15; source msha-controller-operator-history
- **operator_operates_mine:** Morie Company Inc → Julies Pit; 1984-01-16 to 1996-12-02; source msha-controller-operator-history
- **controller_controls_operator:** Energy & Minerals Inc → Morie Company Inc; 1984-01-16 to 1996-12-02; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Julies Pit; 1988-11-14 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_mine:** USS Holdings Inc → Julies Pit; 1996-03-09 to 2003-07-18; source msha-controller-operator-history
- **operator_operates_mine:** Unimin Corp → Julies Pit; 1996-12-03 to 1999-04-30; source msha-controller-operator-history
- **controller_controls_operator:** S C R-Sibelco Nv et al → Unimin Corp; 1996-12-03 to 1999-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates BMC, Inc. → Julies Pit; 1999-05-01 to 2022-04-28; source msha-controller-operator-history
- **controller_controls_operator:** USS Holdings Inc → Hanson Aggregates BMC, Inc.; 1999-05-01 to 2003-07-18; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Julies Pit; 2003-07-19 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Aggregates BMC, Inc.; 2003-07-19 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Julies Pit; 2007-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Hanson Aggregates BMC, Inc.; 2007-08-23 to 2022-04-28; source msha-controller-operator-history
- **controller_controls_mine:** Covia Holdings LLC → Julies Pit; 2021-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Covia Holdings LLC → Unimin Corp; 2021-01-01 to 1999-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Heidelberg Materials Northeast LLC. → Julies Pit; 2022-04-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Heidelberg Materials Northeast LLC.; 2022-04-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Heidelberg Materials Northeast LLC.; 2022-04-29 to 2007-08-22; source msha-controller-operator-history