CARLSBAD, N.M. (KRQE) – It appears waste drums from Los Alamos National Laboratory may have caused the radioactive leak at WIPP.
Officials now say they are looking at the possibility that a chemical reaction may have occurred, rupturing the drums inside panel seven.
Because other waste from Los Alamos may now present a hazard, all shipments from Los Alamos to a site in Texas have been stopped.
Records of what was placed in the waste containers are being studied as are other possible causes.
Teams hope to identify which drums ruptured in the days ahead.
The WIPP plant near Carlsbad has been closed since the leak in mid February.