I see Frank's occ was a Colliery Hewer below in 1939
Is this him?
Frank Locke
Event Type: Accident
Residence Date: 17 Mar 1927
Residence Place: St Helens, Lancashire
Colliery: Ashtons Green
Owner: Bromilow Foster and Co
Notes: Shoulder crushed between box and side.
173 Derbyshire Hill.
Frank Locke
Event Type: Accident
Residence Date: 29 Jul 1927
Residence Place: St Helens, Lancashire
Colliery: Sutton Heath
Owner: Sutton Heath and Lea Green Collieries Co
Notes: Hand crushed by rope.
173 Derbyshire Hill.
Frank Locke
Event Type: Accident
Residence Date: 9 Sep 1927
Residence Place: St Helens, Lancashire
Colliery: Ashtons Green
Owner: Bromilow Foster and Co
Notes: Wrist sprained between boxes.
173 Derbyshire Hill.
F Locke
Event Type: Accident
Residence Date: 14 Jul 1928
Residence Place: St Helens, Lancashire
Colliery: Ashtons Green
Owner: Bromilow Foster and Co
Notes: Fall of coal - contused ankle.
173 Derbyshire Hill Road.
F Locke
Event Type: Accident
Residence Date: 25 Apr 1928
Residence Place: St Helens, Lancashire
Colliery: Ashtons Green
Owner: Bromilow Foster and Co
Notes: Fall of stone - bruised hip.
173 Derbyshire Hill.
Frank Lock
Event Type: Accident
Residence Date: 21 Oct 1929
Residence Place: St Helens, Lancashire
Colliery: Ashtons Green
Owner: Bromilow Foster and Co
Notes: Fall of dirt - bruised shoulder.
173 Derbyshire Hill Road.
details from UK, Coal Mining Accidents and Deaths Index, 1878-1935 on Anc*y