# Relationship history for MSHA mine 4503119

Current hierarchy: **Walt  Miles → Miles Sand & Gravel Co → Tenino**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Walt  Miles et al → Tenino; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bud'S Bulldozing Inc → Tenino; 1987-03-01 to 1989-04-11; source msha-controller-operator-history
- **controller_controls_mine:** Samuel V (Bud)  Williams → Tenino; 1987-03-01 to 1989-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Samuel V (Bud)  Williams → Bud'S Bulldozing Inc; 1987-03-01 to 1989-04-11; source msha-controller-operator-history
- **operator_operates_mine:** Western Sand & Gravel → Tenino; 1989-04-12 to 1999-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Frank  Scarsella et al → Tenino; 1989-04-12 to 1999-06-29; source msha-controller-operator-history
- **controller_controls_operator:** Frank  Scarsella et al → Western Sand & Gravel; 1989-04-12 to 1999-06-29; source msha-controller-operator-history
- **operator_operates_mine:** Quality Rock Products Inc → Tenino; 1999-06-30 to 2004-10-25; source msha-controller-operator-history
- **controller_controls_mine:** Brien N  DeAtley et al → Tenino; 1999-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brien N  DeAtley et al → Quality Rock Products Inc; 1999-06-30 to 2004-10-25; source msha-controller-operator-history
- **controller_controls_operator:** Albert N  DeAtley et al → Quality Rock Products Inc; 1999-06-30 to 2004-10-25; source msha-controller-operator-history
- **operator_operates_mine:** Miles Sand & Gravel Co → Tenino; 2004-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Walt  Miles et al → Miles Sand & Gravel Co; 2004-10-26 to current/open; source msha-controller-operator-history