Richard Hammond's Blast Lab — Season 4, episode 4 watch online
Richard Hammond's Blast Lab, season 4 episode 4: air date August 4, 2011. Episode overview, season trailer and the cast of Richard Hammond's Blast Lab.
The Lab Rats attempt to build a huge tower of bubbles.
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Episodes — Season 4
- 1 Episode 1 July 14, 2011
- 2 Episode 2 July 21, 2011
- 3 Episode 3 July 28, 2011
- 4 Episode 4 August 4, 2011
- 5 Episode 5 August 11, 2011
- 6 Episode 6 August 18, 2011
- 7 Episode 7 August 25, 2011
- 8 Episode 8 September 1, 2011
- 9 Episode 9 September 8, 2011
- 10 Episode 10 September 15, 2011
- 11 Episode 11 September 22, 2011
- 12 Episode 12 September 29, 2011
- 13 Episode 13 October 6, 2011