The dynamite would be DNA, fingerprints. You'd have to show a knife lineup. Hartnell did not return a call for comment. As for DNA and blood tests, White said he thought it would be worth a try, even though the blade is three decades old. Cleaning a knife does not remove all the evidence.
Blood can get into nooks and crannies.
Betty Lou Jensen and David Faraday were shot and killed as they sat in a parked car on an unlit lane. The bullets recovered were from a .22-caliber Super X copper long rifle model made by Winchester. The bullets from the Solano County scene can be fired from such a Marlin. But he added he had not read his department's entire Zodiac case file. It is a matter of record that Allen's weaponry did not match that used to kill Stine in San Francisco.