# Relationship history for MSHA mine 3401262

Current hierarchy: **Glynn  Harmon → G & G Ag Inc → BURDEN PIT**

- 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:** Arnold Dirt Construction Inc → BURDEN PIT; 1980-03-01 to 2000-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Carl  Arnold → BURDEN PIT; 1980-03-01 to 2000-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Arnold → Arnold Dirt Construction Inc; 1980-03-01 to 2000-04-10; source msha-controller-operator-history
- **operator_operates_mine:** G & G Ag Inc → BURDEN PIT; 2000-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Glynn  Harmon → BURDEN PIT; 2000-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Glynn  Harmon → G & G Ag Inc; 2000-04-11 to current/open; source msha-controller-operator-history