# Relationship history for MSHA mine 3101633

Current hierarchy: **Goodson Marvin L → East Coast Limestone Inc → MAPLE HILL 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

- **operator_operates_mine:** East Coast Limestone Inc → MAPLE HILL MINE; 1950-01-01 to 1981-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Hanes James G Iii → MAPLE HILL MINE; 1950-01-01 to 1981-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Hanes James G Iii → East Coast Limestone Inc; 1950-01-01 to 1981-08-31; source msha-controller-operator-history
- **operator_operates_mine:** East Coast Limestone Inc → MAPLE HILL MINE; 1981-09-01 to 1986-02-09; source msha-controller-operator-history
- **controller_controls_mine:** Mateja George-John J Dudley Et Al → MAPLE HILL MINE; 1981-09-01 to 1986-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Mateja George-John J Dudley Et Al → East Coast Limestone Inc; 1981-09-01 to 1986-02-09; source msha-controller-operator-history
- **operator_operates_mine:** East Coast Limestone Inc → MAPLE HILL MINE; 1986-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Goodson Marvin L → MAPLE HILL MINE; 1986-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Goodson Marvin L → East Coast Limestone Inc; 1986-02-10 to current/open; source msha-controller-operator-history