# Relationship history for MSHA mine 2801006

Current hierarchy: **Jessie  Stavola; Michael  Stavola; William  Stavola → Lacey Natural Sand LLC → Lacey Natural Sand LLC**

- 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

- **operator_operates_mine:** Lacey Natural Sand LLC → Lacey Natural Sand LLC; 1999-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Mehok → Lacey Natural Sand LLC; 1999-06-01 to 2007-12-11; source msha-controller-operator-history
- **controller_controls_operator:** John  Mehok → Lacey Natural Sand LLC; 1999-06-01 to 2007-12-11; source msha-controller-operator-history
- **controller_controls_mine:** Jennifer  Cavalier et al → Lacey Natural Sand LLC; 2007-12-12 to 2013-11-14; source msha-controller-operator-history
- **controller_controls_operator:** Jennifer  Cavalier et al → Lacey Natural Sand LLC; 2007-12-12 to 2013-11-14; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth  Arre et al → Lacey Natural Sand LLC; 2007-12-12 to 2013-11-14; source msha-controller-operator-history
- **controller_controls_mine:** Jessie  Stavola et al → Lacey Natural Sand LLC; 2013-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jessie  Stavola et al → Lacey Natural Sand LLC; 2013-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Stavola et al → Lacey Natural Sand LLC; 2013-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Stavola et al → Lacey Natural Sand LLC; 2013-11-15 to current/open; source msha-controller-operator-history