# Relationship history for MSHA mine 2104061

Current hierarchy: **Joshua  Lange; Jordan  Lange; Trevor  Lange; Tylor  Lange → Lange Trenching Inc. → Screen Plant 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

- **controller_controls_mine:** Dale  Lange et al → Screen Plant 1; 2020-04-29 to 2022-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Jordan  Lange et al → Screen Plant 1; 2023-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lange Trenching Inc. → Screen Plant 1; 2024-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dale  Lange et al → Lange Trenching Inc.; 2024-02-09 to 2022-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Lange et al → Lange Trenching Inc.; 2024-02-09 to 2022-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Jordan  Lange et al → Lange Trenching Inc.; 2024-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joshua  Lange et al → Lange Trenching Inc.; 2024-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Trevor  Lange et al → Lange Trenching Inc.; 2024-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tylor  Lange et al → Lange Trenching Inc.; 2024-02-09 to current/open; source msha-controller-operator-history