To find who worked on a project, go to the teardown, (in your case, here: Nikon D5100 Teardown)
See the picture in the upper right hand corner. Above it there is a link to its History. Click on that link. You will see that this was a joint effort by Walter Galan, Miroslav Djuric and Andrew Bookholt. You can see each change as it took place. Compare the step you are looking at to who did it and then click on their name.