Directions:

Woolwich is 12 km downstream from central London. The "Woolwich Laboratory," actually the Royal Military Academy, had classrooms, senior accommodations, stores, as well the laboratory where Cruickshank prepared strontium salts - N51 29.64 E0 04.12.
Royal Laboratory (made weapons, cannon balls) - N51 29.64 E0 04.14
Railway station, Woolwich Arsenal Station, Woolwich New Road - N51 29.40 E0 04.14
"1" = Entrance to Woolwich, Plumsted Road - N51 29.51 E0 04.18.
"2" = Foundry - N51 29.53 E0 04.14.
"3" = Abel's laboratory (inventor of cordite) - N51 29.64 E0 04.31.