# Relationship history for MSHA mine 4104558

Current hierarchy: **TTG Utilities LP → TTG Utilities Inc → TTG Sandpit**

- 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:** TTG Utilities Inc → TTG Sandpit; 2005-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** TTG Utilities LP → TTG Sandpit; 2005-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** TTG Utilities LP → TTG Utilities Inc; 2005-12-20 to current/open; source msha-controller-operator-history