Read After Mine. Absolutely read this book after you read MINE by Brett Battles. This one tells the story of how the Reclaimer came to Earth and how it wound up at the facility in Colorado. Short (roughly 1/3 the length of MINE) and told in a couple of different ways, it sheds light on the initial attempts to understand the Reclaimer. Very enjoyable read that adds depth to MINE.
Not my usual fare, but great nonetheless. Took me a while to get into this book, due to it staying in the kid years for quite a bit, but then it picks up and turns into a solid action/ mystery with a nice twist at the end. Stick with it early and you’ll be rewarded later. 🙂