# Relationship history for MSHA mine 0801135

Current hierarchy: **Mary Alice  Ellington → Harlis R Ellington Construction Incrorporated → SUWANNEE 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:** Tim-Prep Inc → SUWANNEE PIT; 1989-06-01 to 1991-10-20; source msha-controller-operator-history
- **controller_controls_mine:** Harold F  Stokes → SUWANNEE PIT; 1989-06-01 to 1991-10-20; source msha-controller-operator-history
- **controller_controls_operator:** Harold F  Stokes → Tim-Prep Inc; 1989-06-01 to 1991-10-20; source msha-controller-operator-history
- **operator_operates_mine:** Harlis R Ellington Construction Incorporated → SUWANNEE PIT; 1991-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mary Alice  Ellington → SUWANNEE PIT; 1991-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mary Alice  Ellington → Harlis R Ellington Construction Incorporated; 1991-10-21 to current/open; source msha-controller-operator-history