Image below of one the huge coal burning furnaces at the Museum was lit using x3 Nikon SB800′s. 2 were placed close to the right and left of the furnace, behind walls. Angled up and zoomed slightly for a narrow throw of light. The 3rd light was placed out of frame through a doorway camera left, this light was again zoomed for a slightly narrow beam of light and aimed down towards the cobbled floor, children and  wall opposite. The exposure was around 1/30s  to expose for the daylight entering through windows high above. Part 1

Coal Burning furnace at Museum of Technology

The museum is a real gem for a photographer as there lots of character details and shapes.

This simple shot used a single SB800 flash placed low and behind the spanners and a long exposure to capture some ambient daylight on the front of the spanners.

Museum of Technology Spanners

More off camera flash used in this example.

Hathorn Davey Pumping Engine Detail