# Relationship history for MSHA mine 0202768

Current hierarchy: **Philip N  Levin → Hammond Wholesale Flagstone, Inc. → BUCKSKIN II**

- 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

- **controller_controls_mine:** Philip N  Levin → BUCKSKIN II; 1997-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Levin Stone Company Inc → BUCKSKIN II; 1998-05-01 to 2000-02-23; source msha-controller-operator-history
- **controller_controls_operator:** Philip N  Levin → Levin Stone Company Inc; 1998-05-01 to 2000-02-23; source msha-controller-operator-history
- **operator_operates_mine:** V B Falls → BUCKSKIN II; 2000-02-24 to 2000-04-23; source msha-controller-operator-history
- **controller_controls_mine:** Van B  Falls → BUCKSKIN II; 2000-02-24 to 2000-04-23; source msha-controller-operator-history
- **controller_controls_operator:** Van B  Falls → V B Falls; 2000-02-24 to 2000-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Levin Stone Company Inc → BUCKSKIN II; 2000-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Philip N  Levin → Levin Stone Company Inc; 2000-04-24 to current/open; source msha-controller-operator-history