FILE PHOTO: A sign reading “Closure” hangs on a fence at the entrance of the limestone mining by Vulcan Materials in Calica, in Quintana Roo state, Mexico May 6, 2022. Mexico’s government on Friday ordered a halt to Vulcan Materials, a producer of gravel and crushed stone, citing environmental concerns and provoking the U.S.-based firm to say it will take legal action to restart operations in Playa del Carmen. REUTERS/Paola Chiomante