PHILADELPHIA - Return receipts from the U.S. Postal Service are sufficient evidence of service process, the judge overseeing the federal asbestos multidistrict litigation held May 12 in adopting a recommendation that motions to dismiss be denied (In re: Asbestos Products Liability Litigation [No. VI], Various plaintiffs v. Various defendants, No. MDL 875, 02-875, E.D. Pa.; 2014 U.S. Dist. LEXIS 64825).