SAN FRANCISCO (AP) — A former Pacific Gas & Electric company employee experienced resistance when she tried in the wake of a deadly explosion at a gas line to improve the company’s shoddy record-keeping, federal prosecutors said in a court filing in their criminal case against PG&E. Investigators have blamed the 2010 blast in part on poor record-keeping at PG&E that they say was based on incomplete and inaccurate pipeline information. The U.S. Attorney’s Office said in a court filing Monday that Leslie McNiece, a former PG&E employee, would testify that another PG&E employee asked her to destroy documents. Prosecutors did not say what those documents contained.