Source: Investigators recover circuit board believed used to detonate Boston Marathon blasts

[brooklynite]

Source: Boston Globe

Investigators combing through the aftermath of the deadly Boston Marathon terrorist attack have recovered a circuit board in the area of one of the two blasts that they believe was used to detonate the bombs, according to an official briefed on the investigation.

Investigators have also recovered components of the bombs, enabling them to determine what they consisted of two 6-liter pressure cookers packed with nails, ball bearings, and other metal. The makeshift bombs were placed in black duffel bags, the official said.

The one that exploded first was placed on the ground on Boylston Street, across from finish-line viewing stands where dignitaries, including Governor Deval Patrick, had been sitting earlier. The second bag was placed on the ground about 75 to 00 yards down the street, outside the Forum restaurant at 755 Boylston St., according to the official.

Read more: http://www.boston.com/metrodesk/2013/04/16/some-areas-downtown-boston-reopen-today-boston-marathon-bombing-investigation-continues/MiyV94Jle1LoBFHFhkW2NJ/story.html

[elleng]

1. News conference now,

waiting to hear about circuit board.
Circuit board not mentioned.

[warrprayer]

2. getting closer

some bastard is hopefully starting to sweat.

[Old and In the Way]

3. Hopefully, the manufacturer's mark will be legible.

Although it is possible to buy FR-4 laminate and process your own circuit.

[defacto7]

4. Yes, I do it all the time.

It's very simple to etch PC board and circuits. Much of the board you buy has the manufacturing marks but I doubt it's traceable since the stuff is everywhere. But etching circuits is as easy as the board, a sharpie, some muriatic acid from the hardware store and peroxide.