Thomas Firth and Sons Ltd., West Gun Works - north bay of shell machine shops, in which the forgings are machined into projectiles ready for treatment by the secret process used by the company

Thomas Firth and Sons Ltd., West Gun Works - South bay Shell Machine Shop, where the shells are finished, fitted with caps and driving bands, etc

Thomas Firth and Sons Ltd., bond store in which projectiles are stored pending examination

Thomas Firth and Sons Ltd., examining shop, where the workmanship of the projectiles is viewed and inspected by official examiners of the various Governments supplied by the company

Thomas Firth and Sons Ltd. , the building in which the secret process of manipulating the projectiles after machining is carried out

Thomas Firth and Sons Ltd., train load of shell trucks, Midland Railway

Thomas Firth and Sons, Salamander Works, Riga, Russia: Projectile Department - general view of shop

Thomas Firth and Sons, Salamander Works, Riga, Russia: Projectile Department - view of centre bay of shell shop

Thomas Firth and Sons, Salamander Works, Riga, Russia: Projectile Department - view of small lathes in shell shop

Thomas Firth and Sons, Salamander Works, Riga, Russia: Projectile Department - view of east bay of shell shop