# Relationship history for MSHA mine 4202330

Current hierarchy: **Fluor Corp; Ames Construction; Edward Kraemer & Sons → Fluor,  Ames,  Kraemer,  LLC → Fak P. U.  #1**

- 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:** Fluor,  Ames,  Kraemer,  LLC → Fak P. U.  #1; 2001-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ames Construction  et al → Fak P. U.  #1; 2001-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ames Construction  et al → Fluor,  Ames,  Kraemer,  LLC; 2001-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward Kraemer & Sons  et al → Fluor,  Ames,  Kraemer,  LLC; 2001-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fluor Corp  et al → Fluor,  Ames,  Kraemer,  LLC; 2001-09-10 to current/open; source msha-controller-operator-history