# Relationship history for MSHA mine 4503748

Current hierarchy: **Cassandra  Pontius; Bud  Pontius → B and C Trucking, Inc. → Bethel Pit**

- 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:** B and C Trucking, Inc. → Bethel Pit; 2016-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bud  Pontius et al → Bethel Pit; 2016-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bud  Pontius et al → B and C Trucking, Inc.; 2016-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cassandra  Pontius et al → B and C Trucking, Inc.; 2016-05-25 to current/open; source msha-controller-operator-history