When I saw the cover, I remembered seeing the movie October Sky, which was inspired by the book.
I think it is worth reading at any time but especially now when there is so much discussion about safety in coal mines.
http://www.nytimes.com/2010/04/23/us/23mine.html?th&emc=th
The author grew up in Coalwood, West Virginia. He was inspired by the rocket discoveries of the time to, with a group of friends, create his own, and the book is a wonderful, inviting, enticing, inspirational read. I give it two thumbs up.