# Relationship history for MSHA mine 4606215

Current hierarchy: **Muncy Billy J & Danny → Muncy Mining Company Inc → No 22**

- 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:** Car-Jo Mining Inc → No 22; 1980-02-01 to 1984-05-29; source msha-controller-operator-history
- **controller_controls_mine:** Harman William J → No 22; 1980-02-01 to 1984-05-29; source msha-controller-operator-history
- **controller_controls_operator:** Harman William J → Car-Jo Mining Inc; 1980-02-01 to 1984-05-29; source msha-controller-operator-history
- **operator_operates_mine:** Sago Coal Company → No 22; 1984-05-30 to 1988-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Deel William → No 22; 1984-05-30 to 1988-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Deel William → Sago Coal Company; 1984-05-30 to 1988-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Deel Carmel & Odell Et Al → No 22; 1986-04-21 to 1989-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Muncy Billy J & Danny → No 22; 1987-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & O Mining Corp → No 22; 1988-03-15 to 1989-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Deel Carmel & Odell Et Al → C & O Mining Corp; 1988-03-15 to 1989-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Muncy Mining Company Inc → No 22; 1989-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Muncy Billy J & Danny → Muncy Mining Company Inc; 1989-04-01 to current/open; source msha-controller-operator-history