Mr Pea has the gist of it and Newton that's the complete answer. It was used as a handle so they could eat from one end to the other of the pasties without the food getting contaminated with minerals and dust from their hands from which ever mine they were working in.
The pasties as Mr Pea said were a complete meal. Savoury at one end and could then be sweet at the other. The crust being discarded at the end of the meal as Newton described to feed the Bucca or Knockers.
Mr Pea over to you for the next question. Newton that is the most complete answer I have ever had when I have asked the same question. Great knowledge