# Relationship history for MSHA mine 4201713

Current hierarchy: **Stewart Clive L → Clive L Stewart → Payday**

- 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:** Clive L Stewart → Payday; 1980-11-01 to 1981-06-18; source msha-controller-operator-history
- **controller_controls_mine:** Stewart Clive L → Payday; 1980-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stewart Clive L → Clive L Stewart; 1980-11-01 to 1981-06-18; source msha-controller-operator-history
- **operator_operates_mine:** Del Coronado Gold Inc → Payday; 1981-06-19 to 1983-12-26; source msha-controller-operator-history
- **controller_controls_mine:** Thele Robert B → Payday; 1981-06-19 to 1983-12-26; source msha-controller-operator-history
- **controller_controls_operator:** Thele Robert B → Del Coronado Gold Inc; 1981-06-19 to 1983-12-26; source msha-controller-operator-history
- **operator_operates_mine:** Montague Metal & Machine → Payday; 1983-12-27 to 1986-08-12; source msha-controller-operator-history
- **controller_controls_mine:** Du Bois David → Payday; 1983-12-27 to 1986-08-12; source msha-controller-operator-history
- **controller_controls_operator:** Du Bois David → Montague Metal & Machine; 1983-12-27 to 1986-08-12; source msha-controller-operator-history
- **operator_operates_mine:** Clive L Stewart → Payday; 1986-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stewart Clive L → Clive L Stewart; 1986-08-13 to current/open; source msha-controller-operator-history