# Relationship history for MSHA mine 3603153

Current hierarchy: **New Enterprise Stone & Lime Company Inc → New Enterprise Stone & Lime Co., Inc. → MARTINS CREEK**

- 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:** Alpha Portland Cement Company → MARTINS CREEK; 1950-01-01 to 1983-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Portland Industries Inc → MARTINS CREEK; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Portland Industries Inc → Alpha Portland Cement Company; 1950-01-01 to 1983-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Stabler Companies Inc → MARTINS CREEK; 1950-01-01 to 2008-01-31; source msha-controller-operator-history
- **controller_controls_mine:** New Enterprise Stone & Lime Company Inc → MARTINS CREEK; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Industries Inc → MARTINS CREEK; 1983-10-25 to 2011-10-23; source msha-controller-operator-history
- **controller_controls_operator:** Stabler Companies Inc → Eastern Industries Inc; 1983-10-25 to 2008-01-31; source msha-controller-operator-history
- **controller_controls_mine:** New Enterprise Stone & Lime Company Inc → MARTINS CREEK; 2008-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** New Enterprise Stone & Lime Company Inc → Eastern Industries Inc; 2008-02-01 to 2011-10-23; source msha-controller-operator-history
- **operator_operates_mine:** New Enterprise Stone & Lime Co., Inc. → MARTINS CREEK; 2011-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** New Enterprise Stone & Lime Company Inc → New Enterprise Stone & Lime Co., Inc.; 2011-10-24 to current/open; source msha-controller-operator-history