# Relationship history for MSHA mine 1519852

Current hierarchy: **Daniel W  Bunn → Mega Highwall Mining LLC. → SHM-70**

- 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:** Daniel W  Bunn → SHM-70; 2017-03-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mega Highwall Mining LLC. → SHM-70; 2019-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel W  Bunn → Mega Highwall Mining LLC.; 2019-01-08 to current/open; source msha-controller-operator-history