# Relationship history for MSHA mine 0404787

Current hierarchy: **John C  Burton → Blue Eagle Lode Mining Co. → Blue Eagle Lode 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Co Ca Mines Inc → Blue Eagle Lode Mine; 1986-01-01 to 2019-06-12; source msha-controller-operator-history
- **controller_controls_mine:** Compass Mining Ltd  et al → Blue Eagle Lode Mine; 1986-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Compass Mining Ltd  et al → Co Ca Mines Inc; 1986-01-01 to 2019-06-12; source msha-controller-operator-history
- **controller_controls_operator:** Hecla Mining Co  et al → Co Ca Mines Inc; 1986-01-01 to 2019-06-12; source msha-controller-operator-history
- **controller_controls_operator:** Middle Buttes Partners Limited  et al → Co Ca Mines Inc; 1986-01-01 to 2019-06-12; source msha-controller-operator-history
- **operator_operates_mine:** Blue Eagle Lode Mining Co. → Blue Eagle Lode Mine; 2019-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John C  Burton → Blue Eagle Lode Mine; 2019-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John C  Burton → Blue Eagle Lode Mining Co.; 2019-06-13 to current/open; source msha-controller-operator-history