# Relationship history for MSHA mine 3608516

Current hierarchy: **John W  Rich Jr → Waste Management & Processors, Inc. → North Mahanoy Bank**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** John W  Rich Jr et al → North Mahanoy Bank; 1986-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael R  Burns → North Mahanoy Bank; 1994-11-01 to 2011-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Waste Management & Processors Inc → North Mahanoy Bank; 1995-07-01 to 2003-09-04; source msha-controller-operator-history
- **controller_controls_operator:** John W  Rich Jr et al → Waste Management & Processors Inc; 1995-07-01 to 2003-09-04; source msha-controller-operator-history
- **operator_operates_mine:** Keystone Anthracite, Inc. → North Mahanoy Bank; 2003-09-05 to 2007-05-30; source msha-controller-operator-history
- **controller_controls_operator:** Michael R  Burns → Keystone Anthracite, Inc.; 2003-09-05 to 2007-05-30; source msha-controller-operator-history
- **operator_operates_mine:** Waste Management & Processors, Inc. → North Mahanoy Bank; 2007-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John W  Rich Jr et al → Waste Management & Processors, Inc.; 2007-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Burns → North Mahanoy Bank; 2011-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Burns → Keystone Anthracite, Inc.; 2011-03-01 to 2007-05-30; source msha-controller-operator-history