# Relationship history for MSHA mine 1517839

Current hierarchy: **Earl  Brinker → Imi-South Llc → CASEYVILLE YARD**

- 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:** J B  Holeman  et al → CASEYVILLE YARD; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Delta Materials Inc → CASEYVILLE YARD; 1996-09-01 to 1999-03-11; source msha-controller-operator-history
- **controller_controls_operator:** J B  Holeman  et al → Delta Materials Inc; 1996-09-01 to 1999-03-11; source msha-controller-operator-history
- **operator_operates_mine:** Imi-South Llc → CASEYVILLE YARD; 1999-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fred (Pete)  Irving → CASEYVILLE YARD; 1999-03-12 to 2005-12-04; source msha-controller-operator-history
- **controller_controls_operator:** Fred (Pete)  Irving → Imi-South Llc; 1999-03-12 to 2005-12-04; source msha-controller-operator-history
- **controller_controls_mine:** Earl  Brinker et al → CASEYVILLE YARD; 2005-12-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Earl  Brinker et al → Imi-South Llc; 2005-12-05 to current/open; source msha-controller-operator-history