# Relationship history for MSHA mine 4608892

Current hierarchy: **CONSOL Energy Inc → CONSOL of Kentucky Inc. → Bronzite**

- 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:** CONSOL Energy Inc → Bronzite; 1986-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carl  Kirk et al → Bronzite; 1988-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Consol Of Kentucky Inc → Bronzite; 2001-04-01 to 2004-06-23; source msha-controller-operator-history
- **controller_controls_operator:** CONSOL Energy Inc → Consol Of Kentucky Inc; 2001-04-01 to 2004-06-23; source msha-controller-operator-history
- **operator_operates_mine:** Northstar Contractors, Inc. → Bronzite; 2004-06-24 to 2006-08-07; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Kirk et al → Northstar Contractors, Inc.; 2004-06-24 to 2006-08-07; source msha-controller-operator-history
- **operator_operates_mine:** CONSOL of Kentucky Inc. → Bronzite; 2006-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CONSOL Energy Inc → CONSOL of Kentucky Inc.; 2006-08-08 to current/open; source msha-controller-operator-history