# Relationship history for MSHA mine 1401837

Current hierarchy: **Dena R Martin; Louis J Robelli; Stanley R Martin → Air Capitol Recycling LLC → Portable 3**

- 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:** Dena R Martin et al → Portable 3; 2021-05-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Air Capitol Recycling LLC → Portable 3; 2023-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dena R Martin et al → Air Capitol Recycling LLC; 2023-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley R Martin et al → Air Capitol Recycling LLC; 2023-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Louis J Robelli et al → Air Capitol Recycling LLC; 2023-02-27 to current/open; source msha-controller-operator-history