# Relationship history for MSHA mine 4003591

Current hierarchy: **Julio  Sales-Domingo → South Pittsburg Stone → South Pittsburg Stone #2**

- 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

- **controller_controls_mine:** Julio  Sales-Domingo → South Pittsburg Stone #2; 2018-02-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** South Pittsburg Stone → South Pittsburg Stone #2; 2023-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Julio  Sales-Domingo → South Pittsburg Stone; 2023-04-01 to current/open; source msha-controller-operator-history