# Relationship history for MSHA mine 2400492

Current hierarchy: **Jeffrey S  Stores → Hi Line Redi Mix Llc → MOBILE CRUSHER #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:** Shelby Sand & Gravel Inc → MOBILE CRUSHER #1; 1950-01-01 to 1988-08-09; source msha-controller-operator-history
- **controller_controls_mine:** James W  Horner → MOBILE CRUSHER #1; 1950-01-01 to 1988-08-09; source msha-controller-operator-history
- **controller_controls_operator:** James W  Horner → Shelby Sand & Gravel Inc; 1950-01-01 to 1988-08-09; source msha-controller-operator-history
- **operator_operates_mine:** Lunda Redi Mix Inc → MOBILE CRUSHER #1; 1988-08-10 to 1994-08-23; source msha-controller-operator-history
- **controller_controls_mine:** Albert F  Lunda → MOBILE CRUSHER #1; 1988-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Albert F  Lunda → Lunda Redi Mix Inc; 1988-08-10 to 1994-08-23; source msha-controller-operator-history
- **operator_operates_mine:** Hiline Redi-Mix Llc → MOBILE CRUSHER #1; 1994-08-24 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Williamson  et al → MOBILE CRUSHER #1; 1994-08-24 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Williamson  et al → Hiline Redi-Mix Llc; 1994-08-24 to 1996-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Curly Corp → MOBILE CRUSHER #1; 1997-01-01 to 1999-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Stuart  Howell → MOBILE CRUSHER #1; 1997-01-01 to 1999-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Stuart  Howell → Curly Corp; 1997-01-01 to 1999-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Hi Line Redi Mix Llc → MOBILE CRUSHER #1; 1999-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeffrey S  Stores → MOBILE CRUSHER #1; 1999-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey S  Stores → Hi Line Redi Mix Llc; 1999-12-01 to current/open; source msha-controller-operator-history