# Relationship history for MSHA mine 3303466

Current hierarchy: **Jerry  McKee → Mckee Materials LLC → Mckee Materials LLC**

- 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:** Lake Hope Asphalt Inc → Mckee Materials LLC; 1950-01-01 to 2003-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Frances  Efaw → Mckee Materials LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frances  Efaw → Lake Hope Asphalt Inc; 1950-01-01 to 2003-10-05; source msha-controller-operator-history
- **operator_operates_mine:** East Clayton Asphalt → Mckee Materials LLC; 2003-10-06 to 2019-03-12; source msha-controller-operator-history
- **controller_controls_mine:** Danny L  Simms II → Mckee Materials LLC; 2003-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Danny L  Simms II → East Clayton Asphalt; 2003-10-06 to 2019-03-12; source msha-controller-operator-history
- **operator_operates_mine:** Mckee Materials LLC → Mckee Materials LLC; 2019-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerry  McKee → Mckee Materials LLC; 2019-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  McKee → Mckee Materials LLC; 2019-03-13 to current/open; source msha-controller-operator-history