# Relationship history for MSHA mine 0801026

Current hierarchy: **Babcock Florida Company → Earth Source Inc → BABCOCK 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Moore Mc Cormack Resources Inc → BABCOCK MINE; 1950-01-01 to 1988-09-05; source msha-controller-operator-history
- **operator_operates_mine:** Florida Mining & Materials Corp → BABCOCK MINE; 1985-04-01 to 1988-09-05; source msha-controller-operator-history
- **controller_controls_operator:** Moore Mc Cormack Resources Inc → Florida Mining & Materials Corp; 1985-04-01 to 1988-09-05; source msha-controller-operator-history
- **operator_operates_mine:** Florida Mining & Materials Corp → BABCOCK MINE; 1988-09-06 to 1992-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Southdown Inc → BABCOCK MINE; 1988-09-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Southdown Inc → Florida Mining & Materials Corp; 1988-09-06 to 1992-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Co & Grupo Ica → BABCOCK MINE; 1990-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan/Ica Distribution Company → BABCOCK MINE; 1993-01-01 to 1994-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Co & Grupo Ica → Vulcan/Ica Distribution Company; 1993-01-01 to 1994-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Earth Source Inc → BABCOCK MINE; 1994-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Babcock Florida Company → BABCOCK MINE; 1994-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Babcock Florida Company → Earth Source Inc; 1994-05-18 to current/open; source msha-controller-operator-history