# Relationship history for MSHA mine 1514035

Current hierarchy: **Stanley William B → Eagle Quarries Inc → Eagle Quarries Incorporated**

- 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:** Sulphur Springs Stone Company Inc → Eagle Quarries Incorporated; 1983-05-01 to 1985-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Bill J Morse → Eagle Quarries Incorporated; 1983-05-01 to 1985-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Bill J Morse → Sulphur Springs Stone Company Inc; 1983-05-01 to 1985-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Eagle Quarries Inc → Eagle Quarries Incorporated; 1985-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stanley William B → Eagle Quarries Incorporated; 1985-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley William B → Eagle Quarries Inc; 1985-11-01 to current/open; source msha-controller-operator-history