Feds blame gas com­pany for deadly Mass. explosions

The Commercial Appeal - - Front Page -

Fed­eral in­ves­ti­ga­tors say deadly nat­u­ral gas explosions in north­ern Mass­a­chu­setts last month stemmed from faulty work or­ders.

The in­ves­ti­ga­tors say Columbia Gas failed to in­struct the work­ers to de­ac­ti­vate pres­sure sen­sors when tak­ing an old cast-iron gas main out of ser­vice. When those sen­sors de­tected a drop in gas pres­sure, the sys­tem in­creased the pres­sure. Within min­utes, houses across Lawrence, An­dover and North An­dover be­gan to ex­plode.

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