# Relationship history for MSHA mine 4202206

Current hierarchy: **Kelly  Lloyd → West Valley Sand and Gravel, Inc. → Daniel's Canyon Pit**

- 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:** Glenna  Lloyd et al → Daniel's Canyon Pit; 1997-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Valley Construction Company → Daniel's Canyon Pit; 1998-07-01 to 2004-08-19; source msha-controller-operator-history
- **controller_controls_operator:** Glenna  Lloyd et al → Mountain Valley Construction Company; 1998-07-01 to 2004-08-19; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Lloyd et al → Mountain Valley Construction Company; 1998-07-01 to 2004-08-19; source msha-controller-operator-history
- **controller_controls_mine:** Kelly  Lloyd → Daniel's Canyon Pit; 2000-03-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** West Valley Sand And Gravel, Inc. → Daniel's Canyon Pit; 2004-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kelly  Lloyd → West Valley Sand And Gravel, Inc.; 2004-08-20 to current/open; source msha-controller-operator-history