Former Democratic Louisiana Senator John Breaux is working a long-running asbestos settlement case on behalf of four corporate bankruptcy trusts organized to pay cash to victims.

About 100 companies that either mined or used the cancer-causing, heat-resistant mineral have declared Chapter 11 during the past 30 years. Sixty of them formed trusts that have paid $18B to more than three million claimants.

Breaux Lott Leadership group, which is part of Patton Boggs, is representing the U.S. Gypsum, Western Asbestos, Owens Coring Fiberboard and Babcock & Wilcox personal injury settlement funds. It is focused on the tax treatment of asbestos trusts under Section 468B of the Internal Revenue Code, according to the federal filing.

Breaux is assisted by Manny Rossman, who was chief of staff for former Senate Republican Majority Leader Trent Lott and Arizona’s ex-Senator Jon Kyl.

Breaux represented the Pelican State in the Senate for 18 years and in the House for two.