# Relationship history for MSHA mine 1800748

Current hierarchy: **Freddie A  Taylor → ARJ Construction Company Inc → Taylor # 1**

- 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:** George Creek Inc → Taylor # 1; 2000-07-01 to 2002-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Steve A  Konya et al → Taylor # 1; 2000-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve A  Konya et al → George Creek Inc; 2000-07-01 to 2002-04-10; source msha-controller-operator-history
- **controller_controls_operator:** William E  Konya et al → George Creek Inc; 2000-07-01 to 2002-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Loyal G  Forman Jr → Taylor # 1; 2000-12-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Loyal Forman and Son Inc. → Taylor # 1; 2002-04-11 to 2003-03-23; source msha-controller-operator-history
- **controller_controls_operator:** Loyal G  Forman Jr → Loyal Forman and Son Inc.; 2002-04-11 to 2003-03-23; source msha-controller-operator-history
- **operator_operates_mine:** ARJ Construction Company Inc → Taylor # 1; 2003-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Risa  Taylor → Taylor # 1; 2003-03-24 to 2006-02-23; source msha-controller-operator-history
- **controller_controls_operator:** Risa  Taylor → ARJ Construction Company Inc; 2003-03-24 to 2006-02-23; source msha-controller-operator-history
- **controller_controls_mine:** Freddie A  Taylor → Taylor # 1; 2006-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Freddie A  Taylor → ARJ Construction Company Inc; 2006-02-24 to current/open; source msha-controller-operator-history