# Relationship history for MSHA mine 0801002

Current hierarchy: **Chase Roger A → County Line Shell Company → County Line Shell Pit No 1**

- 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:** Rowe Inc → County Line Shell Pit No 1; 1983-08-01 to 1984-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Rowe Elmer → County Line Shell Pit No 1; 1983-08-01 to 1984-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Rowe Elmer → Rowe Inc; 1983-08-01 to 1984-02-12; source msha-controller-operator-history
- **operator_operates_mine:** County Line Shell Company → County Line Shell Pit No 1; 1984-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chase Roger A → County Line Shell Pit No 1; 1984-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chase Roger A → County Line Shell Company; 1984-02-13 to current/open; source msha-controller-operator-history