# Relationship history for MSHA mine 0901097

Current hierarchy: **Vulcan Materials Company → Vulcan Construction Materials, L.P. → Jackson County Mine Site**

- 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) → Jackson County Mine Site; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Blue Circle Industries Plc → Jackson County Mine Site; 1987-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Morgan Corp → Jackson County Mine Site; 1995-09-01 to 1998-06-16; source msha-controller-operator-history
- **controller_controls_mine:** Stewart H  Johnson → Jackson County Mine Site; 1995-09-01 to 1999-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Stewart H  Johnson → Morgan Corp; 1995-09-01 to 1998-06-16; source msha-controller-operator-history
- **operator_operates_mine:** Blue Circle Aggregates Inc → Jackson County Mine Site; 1998-06-17 to 2001-07-11; source msha-controller-operator-history
- **controller_controls_operator:** Blue Circle Industries Plc → Blue Circle Aggregates Inc; 1998-06-17 to 2001-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → Jackson County Mine Site; 2001-07-12 to 2015-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Lafarge Aggregates Southeast → Jackson County Mine Site; 2001-07-12 to 2010-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → Jackson County Mine Site; 2001-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Lafarge Aggregates Southeast; 2001-07-12 to 2010-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → Jackson County Mine Site; 2007-11-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lafarge Building Materials, Inc. → Jackson County Mine Site; 2011-01-01 to 2013-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Lafarge Building Materials, Inc.; 2011-01-01 to 2013-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Construction Materials, L.P. → Jackson County Mine Site; 2013-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Vulcan Construction Materials, L.P.; 2013-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, L.P.; 2013-02-01 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Jackson County Mine Site; 2015-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Lafarge Building Materials, Inc.; 2015-07-10 to 2013-01-31; source msha-controller-operator-history