# Relationship history for MSHA mine 3101779

Current hierarchy: **Claude  Greene → Mayland Stone Company Inc → Addie**

- 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:** Mc Crary Stone Service Inc → Addie; 1950-01-01 to 1982-12-21; source msha-controller-operator-history
- **controller_controls_mine:** William M  McCrary → Addie; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William M  McCrary → Mc Crary Stone Service Inc; 1950-01-01 to 1982-12-21; source msha-controller-operator-history
- **controller_controls_mine:** Claude  Greene → Addie; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mayland Stone Company Inc → Addie; 1982-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Claude  Greene → Mayland Stone Company Inc; 1982-12-22 to current/open; source msha-controller-operator-history