# Relationship history for MSHA mine 0900915

Current hierarchy: **Luke  Fowler → Lithonia Granite Company → Fowlers 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

- **operator_operates_mine:** Lithonia Granite Company → Fowlers Quarry; 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Luke  Fowler → Fowlers Quarry; 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Luke  Fowler → Lithonia Granite Company; 1979-01-01 to current/open; source msha-controller-operator-history