# Relationship history for MSHA mine 3600907

Current hierarchy: **Kenneth R  Eller → Diversified Energy Ventures Inc → Shannopin 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:** Jones & Laughlin Steel Corp → Shannopin Mine; 1950-01-01 to 1980-07-06; source msha-controller-operator-history
- **controller_controls_mine:** LTV Corporation → Shannopin Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** LTV Corporation → Jones & Laughlin Steel Corp; 1950-01-01 to 1980-07-06; source msha-controller-operator-history
- **operator_operates_mine:** Shannopin Mining Company → Shannopin Mine; 1980-07-07 to 1993-02-26; source msha-controller-operator-history
- **controller_controls_mine:** Shannopin Mining Company → Shannopin Mine; 1980-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shannopin Mining Company → Shannopin Mining Company; 1980-07-07 to 1993-02-26; source msha-controller-operator-history
- **operator_operates_mine:** Diversified Energy Ventures Inc → Shannopin Mine; 1993-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth R  Eller → Shannopin Mine; 1993-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth R  Eller → Diversified Energy Ventures Inc; 1993-02-27 to current/open; source msha-controller-operator-history