# Relationship history for MSHA mine 2800009

Current hierarchy: **Vulcan Materials Company → Vulcan Construction Materials, LLC → Glen Gardner 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

- **controller_controls_mine:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Glen Gardner Quarry; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Granite Materials Corp → Glen Gardner Quarry; 1950-01-01 to 1978-03-27; source msha-controller-operator-history
- **controller_controls_mine:** Hale Phillip I → Glen Gardner Quarry; 1950-01-01 to 1978-03-27; source msha-controller-operator-history
- **controller_controls_operator:** Hale Phillip I → Granite Materials Corp; 1950-01-01 to 1978-03-27; source msha-controller-operator-history
- **operator_operates_mine:** Lentine Aggregates → Glen Gardner Quarry; 1978-03-28 to 1997-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Frank M  Lentine et al → Glen Gardner Quarry; 1978-03-28 to 1997-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Frank M  Lentine et al → Lentine Aggregates; 1978-03-28 to 1997-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Christine H  Yackman → Glen Gardner Quarry; 1996-08-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Materials Inc → Glen Gardner Quarry; 1997-04-01 to 2006-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Christine H  Yackman → Pinnacle Materials Inc; 1997-04-01 to 2006-10-17; source msha-controller-operator-history
- **controller_controls_mine:** US Concrete → Glen Gardner Quarry; 2002-02-01 to 2021-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Concrete Materials Inc → Glen Gardner Quarry; 2006-10-18 to 2022-12-31; source msha-controller-operator-history
- **controller_controls_operator:** US Concrete → Eastern Concrete Materials Inc; 2006-10-18 to 2021-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → Glen Gardner Quarry; 2007-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → Glen Gardner Quarry; 2022-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Eastern Concrete Materials Inc; 2022-01-01 to 2022-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Construction Materials, LLC → Glen Gardner Quarry; 2023-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Vulcan Construction Materials, LLC; 2023-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC; 2023-01-01 to 2007-11-15; source msha-controller-operator-history