# Relationship history for MSHA mine 4103317

Current hierarchy: **Downing Belinda → Fresno Construction → Texan Pit**

- 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:** Downing Construction Company → Texan Pit; 1985-05-01 to 1987-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Downing Larry → Texan Pit; 1985-05-01 to 1987-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Downing Larry → Downing Construction Company; 1985-05-01 to 1987-08-10; source msha-controller-operator-history
- **operator_operates_mine:** Fresno Construction → Texan Pit; 1987-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Downing Belinda → Texan Pit; 1987-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Downing Belinda → Fresno Construction; 1987-08-11 to current/open; source msha-controller-operator-history