# Relationship history for MSHA mine 3100363

Current hierarchy: **Claude  Greene → Mayland Stone Company Inc → Pine Mountain**

- 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:** Indusmin Inc → Pine Mountain; 1950-01-01 to 1986-10-20; source msha-controller-operator-history
- **controller_controls_mine:** Indusmin Ltd → Pine Mountain; 1950-01-01 to 1990-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Indusmin Ltd → Indusmin Inc; 1950-01-01 to 1986-10-20; source msha-controller-operator-history
- **controller_controls_mine:** Claude  Greene → Pine Mountain; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mayland Stone Company Inc → Pine Mountain; 1986-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Claude  Greene → Mayland Stone Company Inc; 1986-10-21 to current/open; source msha-controller-operator-history