# Relationship history for MSHA mine 3605722

Current hierarchy: **Morata Larry Jr & William Moore → K & K Coal Inc → No 1 Drift**

- 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:** Kroh Joseph → No 1 Drift; 1974-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** K & K Coal Company → No 1 Drift; 1975-10-06 to 1977-03-30; source msha-controller-operator-history
- **controller_controls_operator:** Kroh Joseph → K & K Coal Company; 1975-10-06 to 1977-03-30; source msha-controller-operator-history
- **operator_operates_mine:** K & K Coal Inc → No 1 Drift; 1977-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Morata Larry Jr & William Moore → No 1 Drift; 1977-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Morata Larry Jr & William Moore → K & K Coal Inc; 1977-03-31 to current/open; source msha-controller-operator-history