# Relationship history for MSHA mine 3601761

Current hierarchy: **Robindale Energy Services Inc → Lehigh Anthracite Coal, LLC → Tamaqua Mine**

- 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:** Greenwood Stripping Corp → Tamaqua Mine; 1950-01-01 to 1974-12-17; source msha-controller-operator-history
- **controller_controls_mine:** James  Fauzio  et al → Tamaqua Mine; 1950-01-01 to 1974-12-17; source msha-controller-operator-history
- **controller_controls_operator:** James  Fauzio  et al → Greenwood Stripping Corp; 1950-01-01 to 1974-12-17; source msha-controller-operator-history
- **controller_controls_mine:** Bethlehem Steel Corp → Tamaqua Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bethlehem Mines Corp → Tamaqua Mine; 1974-12-18 to 1989-02-26; source msha-controller-operator-history
- **controller_controls_operator:** Bethlehem Steel Corp → Bethlehem Mines Corp; 1974-12-18 to 1989-02-26; source msha-controller-operator-history
- **operator_operates_mine:** Lehigh Coal & Navigation Company → Tamaqua Mine; 1989-02-27 to 2003-01-15; source msha-controller-operator-history
- **controller_controls_mine:** James J  Curran Jr → Tamaqua Mine; 1989-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James J  Curran Jr → Lehigh Coal & Navigation Company; 1989-02-27 to 2003-01-15; source msha-controller-operator-history
- **operator_operates_mine:** K A Ash Ltd. → Tamaqua Mine; 2003-01-16 to 2005-11-22; source msha-controller-operator-history
- **controller_controls_mine:** Robert E  Yarger → Tamaqua Mine; 2003-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Yarger → K A Ash Ltd.; 2003-01-16 to 2005-11-22; source msha-controller-operator-history
- **operator_operates_mine:** Lehigh Coal and Navigation Company → Tamaqua Mine; 2005-11-23 to 2010-06-03; source msha-controller-operator-history
- **controller_controls_operator:** James J  Curran Jr → Lehigh Coal and Navigation Company; 2005-11-23 to 2010-06-03; source msha-controller-operator-history
- **operator_operates_mine:** Lehigh Natural Resources → Tamaqua Mine; 2010-06-04 to 2011-05-01; source msha-controller-operator-history
- **controller_controls_mine:** Douglas  Topkis et al → Tamaqua Mine; 2010-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Douglas  Topkis et al → Lehigh Natural Resources; 2010-06-04 to 2011-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Bruce  Toll et al → Lehigh Natural Resources; 2010-06-04 to 2011-05-01; source msha-controller-operator-history
- **operator_operates_mine:** Lehigh Anthracite Coal, LLC → Tamaqua Mine; 2011-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robindale Energy Services Inc → Tamaqua Mine; 2011-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robindale Energy Services Inc → Lehigh Anthracite Coal, LLC; 2011-05-02 to current/open; source msha-controller-operator-history