# Relationship history for MSHA mine 0801257

Current hierarchy: **L E  Vaughn → Kis-Burn Mining & Development Inc → KIS-BURN MINING & DEV, INC.**

- 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:** Kis-Burn Mining & Development Inc → KIS-BURN MINING & DEV, INC.; 1998-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** L E  Vaughn → KIS-BURN MINING & DEV, INC.; 1998-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** L E  Vaughn → Kis-Burn Mining & Development Inc; 1998-05-01 to current/open; source msha-controller-operator-history