Paragraph 2

Plastic explosive containing 83 to 86% penthrite (Note 2)

Density: 1,500 to 1,600 kg/m³

Detonation velocity: 7,300 to 7,700 m/s

Mass: 500 ± 1 gram.

Seven lengths of flexible detonating cord with non-metallic sleeve

Filling mass: 11 to 13 g/m

Length of each cord: 400 ± 2 mm.

Compressed pellet of secondary explosive, recessed to receive detonator

Explosive: hexogen/wax 95/5 or tetryl or similar secondary explosive, with or without added graphite.

Density: 1,500 to 1,600 kg/m³

Diameter: 19 to 21 mm

Height: 19 to 23 mm

Central recess to receive detonator: diameter 7 to 7.3 mm, depth 12 mm.

Seamless steel tube as specified in ISO 65 of the International Organisation for Standardisation M1 (carbon steel tubes suitable for screwing in accordance with ISO 7-1 -Pipe threads where pressure tight joints are made on threads)—Heavy Series, with nominal dimensions DN 100 mm

Outside diameter: 113.1 to 115.0 mm

Wall thickness: 5.0 to 6.5 mm

Length: 1,005 (± 2) mm.

Bottom plate

Material: steel of good weldable quality

Dimensions: 160 × 160 mm

Thickness: 5 to 6 mm.

Six lead cylinders

Diameter: 50 (± 1) mm

Height: 100 to 101 mm

Materials: soft lead, at least 99.5% purity.

Steel block

Length: at least 1,000 mm

Width: at least 150 mm

Height: at least 150 mm

Mass: at least 300 kg if there is no firm base for the steel block.

Plastic or cardboard cylinder for booster charge

Wall thickness: 1.5 to 2.5 mm

Internal diameter: 92 to 96 mm

Height: 64 to 67 mm.

Detonator (electric or non-electric) with initiation force 8 to 10

Wooden disc

Diameter: 92 to 96 mm. Diameter to be matched to the internal diameter of the plastic or cardboard cylinder.

Thickness: 20 mm.

Wooden rod of same dimensions as detonator.

Dressmaking pins (maximum length 20 mm).