# Relationship history for MSHA mine 2302098

Current hierarchy: **Mike  Trager → Trager Limestone LLC → Nettleton 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:** Lola J  Bentley → Nettleton Quarry; 1988-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mike  Trager → Nettleton Quarry; 1993-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bentley Trucking Inc → Nettleton Quarry; 1994-01-01 to 2001-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Lola J  Bentley → Bentley Trucking Inc; 1994-01-01 to 2001-04-11; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc → Nettleton Quarry; 1998-02-03 to 2006-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Apac-Missouri Inc → Nettleton Quarry; 2001-04-12 to 2005-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → Apac-Missouri Inc; 2001-04-12 to 2005-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Trager Limestone LLC → Nettleton Quarry; 2005-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Trager → Trager Limestone LLC; 2005-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Nettleton Quarry; 2006-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Apac-Missouri Inc; 2006-08-28 to 2005-06-30; source msha-controller-operator-history