# Relationship history for MSHA mine 2500997

Current hierarchy: **Gerald T  Williams; Karl R  Heine → Island Landhandlers LLC → Island Landhandlers 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

- **controller_controls_mine:** Joe  Lilley et al → Island Landhandlers LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lilley Sand & Gravel Inc → Island Landhandlers LLC; 1981-07-01 to 1990-05-20; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Lilley et al → Lilley Sand & Gravel Inc; 1981-07-01 to 1990-05-20; source msha-controller-operator-history
- **operator_operates_mine:** Island Landhandlers Inc → Island Landhandlers LLC; 1990-05-21 to 2013-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Marjorie A  Roberts → Island Landhandlers LLC; 1990-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marjorie A  Roberts → Island Landhandlers Inc; 1990-05-21 to 2013-05-21; source msha-controller-operator-history
- **operator_operates_mine:** Island Landhandlers LLC → Island Landhandlers LLC; 2013-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Karl R  Heine et al → Island Landhandlers LLC; 2013-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Karl R  Heine et al → Island Landhandlers LLC; 2013-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gerald T  Williams et al → Island Landhandlers LLC; 2013-05-22 to current/open; source msha-controller-operator-history