# Relationship history for MSHA mine 0501098

Current hierarchy: **Roedel Mike & Billy → Roedel Mining → Sego Lily Lou**

- 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:** Pioneer Uravan Inc → Sego Lily Lou; 1950-01-01 to 1978-04-12; source msha-controller-operator-history
- **controller_controls_mine:** Pioneer Corp → Sego Lily Lou; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pioneer Corp → Pioneer Uravan Inc; 1950-01-01 to 1978-04-12; source msha-controller-operator-history
- **operator_operates_mine:** Johannsen Mining Company → Sego Lily Lou; 1978-04-13 to 1988-03-21; source msha-controller-operator-history
- **controller_controls_mine:** Johannsen Ed → Sego Lily Lou; 1978-04-13 to 1988-03-21; source msha-controller-operator-history
- **controller_controls_operator:** Johannsen Ed → Johannsen Mining Company; 1978-04-13 to 1988-03-21; source msha-controller-operator-history
- **controller_controls_mine:** Roedel Mike & Billy → Sego Lily Lou; 1987-02-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Roedel Mining → Sego Lily Lou; 1988-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roedel Mike & Billy → Roedel Mining; 1988-03-22 to current/open; source msha-controller-operator-history