# Relationship history for MSHA mine 1514446

Current hierarchy: **Adams Kenneth E → Continue Mining Corp → Surface**

- 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:** Continue Mining Corp → Surface; 1984-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adams Kenneth E → Surface; 1984-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adams Kenneth E → Continue Mining Corp; 1984-02-01 to current/open; source msha-controller-operator-history