Outstanding drawing! Is it a double-page spread..? Looks like a single landscape-format sheet of paper, not two preprinted blue artboards taped in the middle. Soft or hard lead pencil..? Wooden or mechanical..? Or a lead holder..? Seems to me it's a direct sketch on a single sheet, not a light-table clean-up.
It's one page and I use B lead in lead holder. I don't have a light table big enough so I have to bite the bullet and draw away. Sometimes it works, other times I scrap and try again. Practice makes perfect.