# Relationship history for MSHA mine 1519002

Current hierarchy: **Elmer S  Campbell; Paul W  Campbell → American Highwall Mining LLC → Josie Mine #2**

- 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:** American Highwall Mining LLC → Josie Mine #2; 2006-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Elmer S  Campbell  et al → Josie Mine #2; 2006-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elmer S  Campbell  et al → American Highwall Mining LLC; 2006-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul W  Campbell  et al → American Highwall Mining LLC; 2006-06-07 to current/open; source msha-controller-operator-history