# Relationship history for MSHA mine 4801603

Current hierarchy: **Michael D  Kohout → BlaZe-On Construction Company Inc → BlaZe-On Construction 1**

- 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:** Countryside Construction Inc → BlaZe-On Construction 1; 2002-08-14 to 2005-08-21; source msha-controller-operator-history
- **controller_controls_mine:** BRAD  MC CLAREN → BlaZe-On Construction 1; 2002-08-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** BRAD  MC CLAREN → Countryside Construction Inc; 2002-08-14 to 2005-08-21; source msha-controller-operator-history
- **operator_operates_mine:** BlaZe-On Construction Company Inc → BlaZe-On Construction 1; 2005-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael D  Kohout → BlaZe-On Construction 1; 2005-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael D  Kohout → BlaZe-On Construction Company Inc; 2005-08-22 to current/open; source msha-controller-operator-history