Positive identification needed

[janner305]

Hi button gurus,

Wonder if anyone can help identify the following 2 buttons:
1. Believed to be West Yorkshire Regt militia battalions as does not carry the usual battle honours - but what period?? Victorian post 1881, WW1 or WW2?

2. Carries the designation TD VOLUNTEERS S'MM ROYAL ENGINEERS ROYAL ENGINEERS.
My belief is that this button is for the Submarine Miners - Tyne or Tees Division, a department under the Royal Engineers - but which division
???
Also am unsure if it is to the Militia or Volunteer Submarine Miners, since they appear to have used the same? (or similar) buttons.

Regards,

Barry