# Relationship history for MSHA mine 3003978

Current hierarchy: **Christopher J  Ferlito; Mary P  Audlin → Christopher J Construction LLC → Powerscreen Trakpactor COMEB9606**

- 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:** Mary P  Audlin et al → Powerscreen Trakpactor COMEB9606; 2015-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Christopher J Construction LLC → Powerscreen Trakpactor COMEB9606; 2016-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mary P  Audlin et al → Christopher J Construction LLC; 2016-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher J  Ferlito et al → Christopher J Construction LLC; 2016-05-10 to current/open; source msha-controller-operator-history