# Relationship history for MSHA mine 4002742

Current hierarchy: **Kulbeth Jimmy D & William H Ring → T-I-K-A Energies Company → T-I-K-A Energies Coal Yard**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** T-I-K-A Energies Company → T-I-K-A Energies Coal Yard; 1981-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kulbeth Jimmy D & William H Ring → T-I-K-A Energies Coal Yard; 1981-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kulbeth Jimmy D & William H Ring → T-I-K-A Energies Company; 1981-08-01 to current/open; source msha-controller-operator-history