# Relationship history for MSHA mine 1510345

Current hierarchy: **Kramer Jerry → Ksa Resources Inc → Rocky Hill Tipple**

- 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:** Ksa Resources Inc → Rocky Hill Tipple; 1977-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kramer Jerry → Rocky Hill Tipple; 1977-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kramer Jerry → Ksa Resources Inc; 1977-04-01 to current/open; source msha-controller-operator-history