# Relationship history for MSHA mine 2402256

Current hierarchy: **Aaron  Golik; Tracy  Golik → Century Companies Inc dba Century Construction → Fossum Materials Wash Plant**

- 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:** Jack  Morgenstern et al → Fossum Materials Wash Plant; 1997-10-01 to 2015-08-04; source msha-controller-operator-history
- **operator_operates_mine:** Century Companies Inc dba Century Construction → Fossum Materials Wash Plant; 2002-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Morgenstern et al → Century Companies Inc dba Century Construction; 2002-01-03 to 2015-08-04; source msha-controller-operator-history
- **controller_controls_mine:** Tim  Robertson → Fossum Materials Wash Plant; 2015-08-05 to 2022-03-21; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Robertson → Century Companies Inc dba Century Construction; 2015-08-05 to 2022-03-21; source msha-controller-operator-history
- **controller_controls_mine:** Tim  Robertson et al → Fossum Materials Wash Plant; 2022-03-22 to 2023-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Robertson et al → Century Companies Inc dba Century Construction; 2022-03-22 to 2023-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Aaron  Golik et al → Century Companies Inc dba Century Construction; 2022-03-22 to 2023-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Tracy  Golik et al → Fossum Materials Wash Plant; 2023-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tracy  Golik et al → Century Companies Inc dba Century Construction; 2023-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aaron  Golik et al → Century Companies Inc dba Century Construction; 2023-03-15 to current/open; source msha-controller-operator-history