# Relationship history for MSHA mine 0405787

Current hierarchy: **Ted  Moore → TMT Enterprises, Inc. → PORTABLE NORBERG**

- 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:** Ted  Moore → PORTABLE NORBERG; 2008-10-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** TMT Enterprises, Inc. → PORTABLE NORBERG; 2009-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ted  Moore → TMT Enterprises, Inc.; 2009-07-01 to current/open; source msha-controller-operator-history