# Relationship history for MSHA mine 3503535

Current hierarchy: **Nathan T  Bennett → Pure Mountain LLC → De-source**

- 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:** DiaSource LLC → De-source; 2001-07-01 to 2017-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Evons  et al → De-source; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Evons  et al → DiaSource LLC; 2001-07-01 to 2017-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Joan  Evons  et al → DiaSource LLC; 2001-07-01 to 2017-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Dymencore → De-source; 2017-11-01 to 2024-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Paul  Dymen et al → De-source; 2017-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul  Dymen et al → Dymencore; 2017-11-01 to 2024-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Luke  Dymen et al → Dymencore; 2017-11-01 to 2024-08-10; source msha-controller-operator-history
- **operator_operates_mine:** Pure Mountain LLC → De-source; 2024-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nathan T  Bennett → De-source; 2024-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nathan T  Bennett → Pure Mountain LLC; 2024-08-11 to current/open; source msha-controller-operator-history