# Relationship history for MSHA mine 1506343

Current hierarchy: **Moore Jimmy Lee → Moore & Moore Coal Company → No Lb-16 Mine**

- 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

- **operator_operates_mine:** Kermit Meade Coal Company → No Lb-16 Mine; 1950-01-01 to 1974-08-01; source msha-controller-operator-history
- **controller_controls_mine:** Meade Kermit Coal Co → No Lb-16 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Meade Kermit Coal Co → Kermit Meade Coal Company; 1950-01-01 to 1974-08-01; source msha-controller-operator-history
- **operator_operates_mine:** Moore & Moore Coal Company → No Lb-16 Mine; 1974-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Moore Jimmy Lee → No Lb-16 Mine; 1974-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moore Jimmy Lee → Moore & Moore Coal Company; 1974-08-02 to current/open; source msha-controller-operator-history