# Relationship history for MSHA mine 3003935

Current hierarchy: **Dave  Burrell → Burrell's Excavating, Inc. → KMC West Edmeston**

- 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:** Dave  Burrell  et al → KMC West Edmeston; 1999-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Burrell's Excavating, Inc. → KMC West Edmeston; 2014-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dave  Burrell  et al → Burrell's Excavating, Inc.; 2014-10-09 to current/open; source msha-controller-operator-history