# Relationship history for MSHA mine 2103635

Current hierarchy: **Michael L  Mallum → Mallum Hauling Inc → Screener**

- 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:** Mallum Hauling Inc → Screener; 2008-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael L  Mallum et al → Screener; 2008-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael L  Mallum et al → Mallum Hauling Inc; 2008-07-01 to current/open; source msha-controller-operator-history