# Relationship history for MSHA mine 1202344

Current hierarchy: **TTI Technologies Inc → TTI Synfuel → Prosperity Synfuel Facility**

- 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:** TTI Tech, LLC → Prosperity Synfuel Facility; 2003-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** TTI Technologies Inc → Prosperity Synfuel Facility; 2003-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** TTI Technologies Inc → TTI Tech, LLC; 2003-04-04 to current/open; source msha-controller-operator-history