# Relationship history for MSHA mine 4104395

Current hierarchy: **Robert A  Mc Creless; Alesia  Mc Creless → Applied Chemical Magnesias Corp. → ACM  Mine**

- 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:** Robert A  Mc Creless  et al → ACM  Mine; 1999-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Applied Chemical Magnesias Corp. → ACM  Mine; 2003-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert A  Mc Creless  et al → Applied Chemical Magnesias Corp.; 2003-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alesia  Mc Creless  et al → Applied Chemical Magnesias Corp.; 2003-01-02 to current/open; source msha-controller-operator-history