# Relationship history for MSHA mine 1200136

Current hierarchy: **The Heritage Group → US Aggregates LLC → US Aggregates-Francesville 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → US Aggregates-Francesville Quarry; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Medusa Aggregates Company → US Aggregates-Francesville Quarry; 1950-01-01 to 1978-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Medusa Corp → US Aggregates-Francesville Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Medusa Corp → Medusa Aggregates Company; 1950-01-01 to 1978-12-31; source msha-controller-operator-history
- **controller_controls_mine:** The Heritage Group → US Aggregates-Francesville Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Crane Company → US Aggregates-Francesville Quarry; 1978-12-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Medusa Aggregates Company → US Aggregates-Francesville Quarry; 1979-01-01 to 1982-12-19; source msha-controller-operator-history
- **controller_controls_operator:** Crane Company → Medusa Aggregates Company; 1979-01-01 to 1982-12-19; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Construction Materials, L.P. → US Aggregates-Francesville Quarry; 1982-12-20 to 2011-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, L.P.; 1982-12-20 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** The Heritage Group → US Aggregates-Francesville Quarry; 1989-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → US Aggregates-Francesville Quarry; 2007-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Vulcan Construction Materials, L.P.; 2007-11-16 to 2011-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Heritage Aggregates, LLC → US Aggregates-Francesville Quarry; 2011-10-01 to 2020-05-11; source msha-controller-operator-history
- **controller_controls_operator:** The Heritage Group → Heritage Aggregates, LLC; 2011-10-01 to 2020-05-11; source msha-controller-operator-history
- **operator_operates_mine:** US Aggregates Inc → US Aggregates-Francesville Quarry; 2020-05-12 to 2026-06-17; source msha-controller-operator-history
- **controller_controls_operator:** The Heritage Group → US Aggregates Inc; 2020-05-12 to 2026-06-17; source msha-controller-operator-history
- **operator_operates_mine:** US Aggregates LLC → US Aggregates-Francesville Quarry; 2026-06-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Heritage Group → US Aggregates LLC; 2026-06-18 to current/open; source msha-controller-operator-history