# Relationship history for MSHA mine 0801113

Current hierarchy: **Eddie  Huggins → Eddie Huggins Land Grading Company → Port St Lucie Mine**

- 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:** Union Holding Corp → Port St Lucie Mine; 1988-10-01 to 1994-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Tom  Lloyd → Port St Lucie Mine; 1988-10-01 to 1994-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Tom  Lloyd → Union Holding Corp; 1988-10-01 to 1994-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Port St Lucie Tractor Service Inc → Port St Lucie Mine; 1994-09-01 to 2000-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Paul M Revels → Port St Lucie Mine; 1994-09-01 to 2000-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Paul M Revels → Port St Lucie Tractor Service Inc; 1994-09-01 to 2000-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Eddie Huggins Land Grading Company → Port St Lucie Mine; 2000-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eddie  Huggins → Port St Lucie Mine; 2000-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eddie  Huggins → Eddie Huggins Land Grading Company; 2000-12-01 to current/open; source msha-controller-operator-history