# Relationship history for MSHA mine 0404466

Current hierarchy: **O'Hara Resources Ltd → O'Hara Resources Ltd → Flume House Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Flume House Mining Ltd → Flume House Mine; 1980-10-01 to 1986-07-15; source msha-controller-operator-history
- **controller_controls_mine:** Sierra Nevada Mng Co-Sierra Lode Corp Et Al → Flume House Mine; 1980-10-01 to 1986-07-15; source msha-controller-operator-history
- **controller_controls_operator:** Sierra Nevada Mng Co-Sierra Lode Corp Et Al → Flume House Mining Ltd; 1980-10-01 to 1986-07-15; source msha-controller-operator-history
- **operator_operates_mine:** Golden Flume Mining Ltd Of Calgary Canada → Flume House Mine; 1986-07-16 to 1988-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Boitano Robert Et Al → Flume House Mine; 1986-07-16 to 1988-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Boitano Robert Et Al → Golden Flume Mining Ltd Of Calgary Canada; 1986-07-16 to 1988-12-31; source msha-controller-operator-history
- **operator_operates_mine:** O'Hara Resources Ltd → Flume House Mine; 1989-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** O'Hara Resources Ltd → Flume House Mine; 1989-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** O'Hara Resources Ltd → O'Hara Resources Ltd; 1989-01-01 to current/open; source msha-controller-operator-history