title: TMB and TMSB series mines
text: # TMB and TMSB series mines
  
  The TMB-1,TMB-2, and TMSB were a round Soviet minimum metal anti-tank mines used during the Second World War. Both mines were similar in design, differing only in size, with the TMB-2 being the larger.
  
  The mines bodies were constructed from asphalt impregnated cardboard with internal wooden slats for strengthening. A central glass pressure plug sat over an MV-5 pressure fuse. Downward force of about 26 pounds (115 newtons) causes the case to give way, triggering the mine.
  
  The mine was normally employed in minefields mixed with metal-cased anti-tank mines. The mines were also easy to fit with anti-handling devices.
  
  ## Specifications
  
  | | TMB-1 | TMB-2 | TMSB |
  | - | - | - | - |
  | Diameter | 10+5⁄8 inches (270 mm) | 10+3⁄4 inches (270 mm) | 11+2⁄8 inches (290 mm) |
  | Height | 5+1⁄4 inches (130 mm) | 6 inches (150 mm) | 6+5⁄8 inches (170 mm) |
  | Weight | 14.5 lb (6.6 kg) | 15.4 lb (7.0 kg) | 17.6 lb (8.0 kg) |
  | Explosive content | 11 lb (5.0 kg) of Amatol with a 50 gram booster charge. | 11 lb (5.0 kg) of Amatol with a 75 gram booster charge | 13 lb (5.9 kg) |
  