Construction & Engineering blogs

If anyone reads engineering or construction blogs then I found a list of a top 50 which has opened my eyes to various new blogs that I previously never knew existed! Anyway, for those interested the link is here: http://www.yorkshireprofiles.co.uk/top-50-engineering-blogs/ I personally found gear technology website quite interesting anyone got a personal favourite for me to look at that they read often? Cheers, James