# Relationship history for MSHA mine 4003086

Current hierarchy: **Moore Charles Micheal → Round Mountain Mining Company Inc → Round Mountain Mining Co Inc**

- 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:** Round Mountain Mining Company Inc → Round Mountain Mining Co Inc; 1995-05-01 to 1996-02-29; source msha-controller-operator-history
- **controller_controls_mine:** Duncan Kay → Round Mountain Mining Co Inc; 1995-05-01 to 1996-02-29; source msha-controller-operator-history
- **controller_controls_operator:** Duncan Kay → Round Mountain Mining Company Inc; 1995-05-01 to 1996-02-29; source msha-controller-operator-history
- **operator_operates_mine:** Round Mountain Mining Company Inc → Round Mountain Mining Co Inc; 1996-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Moore Charles Micheal → Round Mountain Mining Co Inc; 1996-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moore Charles Micheal → Round Mountain Mining Company Inc; 1996-03-01 to current/open; source msha-controller-operator-history