# Relationship history for MSHA mine 2400338

Current hierarchy: **Montana Resources Inc → Montana Resources, LLC → Continental 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:** Anaconda Minerals Company → Continental Mine; 1950-01-01 to 1986-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Atlantic Richfield Company → Continental Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Atlantic Richfield Company → Anaconda Minerals Company; 1950-01-01 to 1986-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Montana Resources, LLC → Continental Mine; 1986-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Montana Resources Inc → Continental Mine; 1986-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Montana Resources Inc → Montana Resources, LLC; 1986-07-01 to current/open; source msha-controller-operator-history