# Relationship history for MSHA mine 1511522

Current hierarchy: **Craig Jerry & Frank → Craig Coal Company → No 1 Surface Mine**

- 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:** Judy Ann Coal Company → No 1 Surface Mine; 1978-08-01 to 1982-11-22; source msha-controller-operator-history
- **controller_controls_mine:** Craig Jerry → No 1 Surface Mine; 1978-08-01 to 1982-11-22; source msha-controller-operator-history
- **controller_controls_operator:** Craig Jerry → Judy Ann Coal Company; 1978-08-01 to 1982-11-22; source msha-controller-operator-history
- **operator_operates_mine:** Craig Coal Company → No 1 Surface Mine; 1982-11-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Craig Jerry & Frank → No 1 Surface Mine; 1982-11-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Craig Jerry & Frank → Craig Coal Company; 1982-11-23 to current/open; source msha-controller-operator-history