# Relationship history for MSHA mine 4609424

Current hierarchy: **CONSOL Energy Inc → CONSOL of Kentucky Inc. → MT-34 Underground Mine**

- 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 → MT-34 Underground Mine; 1986-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John W  Smith → MT-34 Underground Mine; 2005-06-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Alpha & Omega Coal Co., LLC → MT-34 Underground Mine; 2011-08-01 to 2012-04-04; source msha-controller-operator-history
- **controller_controls_operator:** John W  Smith → Alpha & Omega Coal Co., LLC; 2011-08-01 to 2012-04-04; source msha-controller-operator-history
- **operator_operates_mine:** CONSOL of Kentucky Inc. → MT-34 Underground Mine; 2012-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CONSOL Energy Inc → CONSOL of Kentucky Inc.; 2012-04-05 to current/open; source msha-controller-operator-history