# Relationship history for MSHA mine 0402836

Current hierarchy: **Earl G Broderick → Nuns Canyon Rock LLC → Nuns Canyon Rock LLC**

- 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:** Nuns Canyon Quarry Inc → Nuns Canyon Rock LLC; 1950-01-01 to 2015-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Harold E Weise → Nuns Canyon Rock LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harold E Weise → Nuns Canyon Quarry Inc; 1950-01-01 to 2015-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Nuns Canyon Rock LLC → Nuns Canyon Rock LLC; 2015-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Earl G Broderick → Nuns Canyon Rock LLC; 2015-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Earl G Broderick → Nuns Canyon Rock LLC; 2015-04-01 to current/open; source msha-controller-operator-history