# Relationship history for MSHA mine 1002340

Current hierarchy: **Mark  DeAtley; Dusty  Forsmann → M.A DeAtley Construction → Powerscreen Premiertrak 400**

- 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:** Dusty  Forsmann et al → Powerscreen Premiertrak 400; 2017-04-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M.A DeAtley Construction → Powerscreen Premiertrak 400; 2022-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dusty  Forsmann et al → M.A DeAtley Construction; 2022-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  DeAtley et al → M.A DeAtley Construction; 2022-04-05 to current/open; source msha-controller-operator-history