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Drill bits, coal mining use

Drill bits, coal mining use

Set of Morse No 8H straight shank Twist Drills

Set of Morse No 8H straight shank Twist Drills

1930-1960
Drill bits, coal mining use

Drill bits, coal mining use

Drill bits and protective covers

Drill bits and protective covers

Drill bit

Drill bit

Drill bit

Drill bit

Roll of drill bits

Roll of drill bits

Bit for compressed air pick

Bit for compressed air pick

I Sorbey twist bit for wood

I Sorbey twist bit for wood

circa 1900
Two drill bits

Two drill bits

Drill Bits- Compressed Air Drill bits from Ex Bold Colliery. Manufacturer unknown. Part of Coal Mining collection.

Compressed air drill bits

Two hydraulic methane extraction drill parts.

Drill Bits

circa 1960
Drill bits (3)

Drill bits (3)

Two steel drill bits coated with gold-coloured titanium nitride.

Two steel drill bits coated with gold-coloured titanium nitride.

Drill Bits- set of 8 drill bits (augers) with holders from Old Meadows Colliery, plus two augers without holders, made by Sorbey (Sheffield). All listed as T0641 on Lancashire Coal Mining Museum inventory list.

Set of drills - augers and holders- from Old Meadows Colliery