By MATT MOFFETT, ANTHONY ESPOSITO and CAROLINA PICA COPIAPO, Chile—Chile opened a new chapter Thursday in the country’s two-month-long mining rescue operation, with the country’s president promising tough new labor laws and action against the operator of the collapsed mine. View Full Image Associated Press A day after Wednesday’s rescue, Elizabeth Segovia, a miner’s sister, dismantled a site honoring men who had been trapped in the San Jos