"Draft minority report to “Improving natural gas safety in earthquakes,'" by Carl L. Strand, 2002, submitted to the ASCE-25 Task Committee on Earthquake Safety Issues for Gas Systems and the California Seismic Safety Commission

Here is the link to the majority report:

"Improving natural gas safety in earthquakes," by ASCE-25 Task Committee on Earthquake Safety Issues for Gas Systems, published by California Seismic Safety Commission, Report SSC-02-03, 2002