The Chronology of PT/35(b): 6 March 1990

6 March 1990

“Other enquiry” i.e. not evidentially significant

According to Williamson’s memo of 16 March 1990 to the SIO another of the “other enquiries” that was carried out was a visit to Prestwick Circuits, Ayr (PCB manufacturers) on 6 March 1990. Excellent co-operation and advice was apparently received during discussions with senior management and technicians, and their conclusions were that the board had been professionally manufactured but not to a high standard and using dated technology.

They suggested the best line of enquiry to be that the tin which was used as an etch resist (i.e. that coated the circuit board tracks) was uncommon as was the 9 layers of glass cloth, so these were the best avenues to pursue.

DP/19

DP/19

Harrower’s defence precognition demonstrates that he did not have a good memory of the various places that he visited when enquiring into the source of the fragment. However, he did mention that Prestwick Circuits rang a bell.

Advertisements
This entry was posted in Chronology, PT/35(b). Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s