WASHINGTON, April 3 (Reuters) - The U.S. on Wednesday asked the Mexican government to conduct a review based on a U.S. finding that workers' rights were denied at Industrias Penoles' Tizapa mine, the U.S. Labor Department and the U.S. Trade Representative's office said.

The U.S. agencies said the request under the USMCA trade pact follows a March 4 petition filed by the Los Mineros labor union alleging Industrias Pe?oles violated workers’ freedom of association and collective bargaining rights at the company's Tizapa mine in Zacazonapan.

(Reporting by Paul Grant; Editing by Eric Beech)