Figure 12 is an array of 5 photographs. Reading left to right, top to bottom, the first image shows cleaning materials (rubber gloves, sponges and a hand-held spray dispenser) on a tiled floor. The next image shows a farm tractor pulling a fertilizer spreader across a crop field. The next image shows an ice rink being used for a game of ice hockey. The next picture shows a view of a power station identified as such by the row of cooling towers with steam coming from them and two taller chimneys with smoke coming from them. The final image is a close up photograph of a bale of wood pulp.

 1.2.4 Ammonia synthesis by bulk production