# Relationship history for MSHA mine 0103124

Current hierarchy: **WPR Holding Inc → WPR Materials Inc → Lois Lane 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

- **operator_operates_mine:** Parker Sand & Gravel → Lois Lane Pit; 1998-06-01 to 2000-07-27; source msha-controller-operator-history
- **controller_controls_mine:** Mike  Parker → Lois Lane Pit; 1998-06-01 to 2000-07-27; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Parker → Parker Sand & Gravel; 1998-06-01 to 2000-07-27; source msha-controller-operator-history
- **operator_operates_mine:** Poarch Sand & Gravel, LLC → Lois Lane Pit; 2000-07-28 to 2011-10-02; source msha-controller-operator-history
- **controller_controls_mine:** Bobby  Parker et al → Lois Lane Pit; 2000-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bobby  Parker et al → Poarch Sand & Gravel, LLC; 2000-07-28 to 2011-10-02; source msha-controller-operator-history
- **controller_controls_mine:** WPR Holding Inc → Lois Lane Pit; 2006-07-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** WPR Materials Inc → Lois Lane Pit; 2011-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** WPR Holding Inc → WPR Materials Inc; 2011-10-03 to current/open; source msha-controller-operator-history