# Relationship history for MSHA mine 0103158

Current hierarchy: **Construction Partners Inc → Wiregrass Construction Co., Inc. → Wiregrass Construction Skyline 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

- **operator_operates_mine:** Jackson Paving & Construction Inc → Wiregrass Construction Skyline Quarry; 1999-06-01 to 2007-08-26; source msha-controller-operator-history
- **controller_controls_mine:** Ron  Jackson → Wiregrass Construction Skyline Quarry; 1999-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ron  Jackson → Jackson Paving & Construction Inc; 1999-06-01 to 2007-08-26; source msha-controller-operator-history
- **operator_operates_mine:** Jackson Materials LLC → Wiregrass Construction Skyline Quarry; 2007-08-27 to 2014-08-03; source msha-controller-operator-history
- **controller_controls_mine:** Ron  Jackson → Wiregrass Construction Skyline Quarry; 2007-08-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ron  Jackson → Jackson Materials LLC; 2007-08-27 to 2014-08-03; source msha-controller-operator-history
- **controller_controls_mine:** John  Harper → Wiregrass Construction Skyline Quarry; 2008-04-23 to 2014-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Construction Partners Inc → Wiregrass Construction Skyline Quarry; 2014-07-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wiregrass Construction Co., Inc. → Wiregrass Construction Skyline Quarry; 2014-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Harper → Wiregrass Construction Co., Inc.; 2014-08-04 to 2014-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Construction Partners Inc → Wiregrass Construction Co., Inc.; 2014-08-04 to current/open; source msha-controller-operator-history