# Relationship history for MSHA mine 0100099

Current hierarchy: **Jim  Farrell; Doug  Doss → South East Refractories Inc → SOUTHEAST REFRACTORIES, INC.**

- 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:** South East Refractories Inc → SOUTHEAST REFRACTORIES, INC.; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Doug  Doss et al → SOUTHEAST REFRACTORIES, INC.; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Doug  Doss et al → South East Refractories Inc; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Farrell et al → South East Refractories Inc; 1950-01-01 to current/open; source msha-controller-operator-history