# Relationship history for MSHA mine 2003124

Current hierarchy: **Robert  Niethammer → Niethammer Transport, Inc. → NIETHAMMER TRANSPORT**

- 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:** Niethammer Transport, Inc. → NIETHAMMER TRANSPORT; 1999-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Niethammer → NIETHAMMER TRANSPORT; 1999-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Niethammer → Niethammer Transport, Inc.; 1999-07-01 to current/open; source msha-controller-operator-history