# Relationship history for MSHA mine 0402321

Current hierarchy: **Raymond Phillip → B & R Quarries → FEATHER RIVER TRAVERTINE QUARRY**

- 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:** V & M Quarry Company → FEATHER RIVER TRAVERTINE QUARRY; 1950-01-01 to 1984-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Hansen Merv → FEATHER RIVER TRAVERTINE QUARRY; 1950-01-01 to 1984-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Hansen Merv → V & M Quarry Company; 1950-01-01 to 1984-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Feather River Travertine Quarry Inc → FEATHER RIVER TRAVERTINE QUARRY; 1984-08-23 to 1986-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Mc Groarty Bill → FEATHER RIVER TRAVERTINE QUARRY; 1984-08-23 to 1986-10-14; source msha-controller-operator-history
- **controller_controls_operator:** Mc Groarty Bill → Feather River Travertine Quarry Inc; 1984-08-23 to 1986-10-14; source msha-controller-operator-history
- **operator_operates_mine:** Feather River Travertine Quarry Inc → FEATHER RIVER TRAVERTINE QUARRY; 1986-10-15 to 1995-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Dingel Donald Le Roy → FEATHER RIVER TRAVERTINE QUARRY; 1986-10-15 to 1995-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Dingel Donald Le Roy → Feather River Travertine Quarry Inc; 1986-10-15 to 1995-08-31; source msha-controller-operator-history
- **operator_operates_mine:** B & R Quarries → FEATHER RIVER TRAVERTINE QUARRY; 1995-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Raymond Phillip → FEATHER RIVER TRAVERTINE QUARRY; 1995-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raymond Phillip → B & R Quarries; 1995-09-01 to current/open; source msha-controller-operator-history