# Relationship history for MSHA mine 0404367

Current hierarchy: **Frost Lloyd → Lucky Chance Mining Company Inc → Fred Scott Placer**

- 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

- **controller_controls_mine:** Griblin Frank → Fred Scott Placer; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lucky Chance Mining Company Inc → Fred Scott Placer; 1979-12-01 to 1980-04-08; source msha-controller-operator-history
- **controller_controls_mine:** Frost Lloyd → Fred Scott Placer; 1979-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frost Lloyd → Lucky Chance Mining Company Inc; 1979-12-01 to 1980-04-08; source msha-controller-operator-history
- **operator_operates_mine:** Richfield Resources Inc → Fred Scott Placer; 1980-04-09 to 1981-09-07; source msha-controller-operator-history
- **controller_controls_operator:** Griblin Frank → Richfield Resources Inc; 1980-04-09 to 1981-09-07; source msha-controller-operator-history
- **operator_operates_mine:** Lucky Chance Mining Company Inc → Fred Scott Placer; 1981-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frost Lloyd → Lucky Chance Mining Company Inc; 1981-09-08 to current/open; source msha-controller-operator-history