Any of these would help today:
All the hammers in the world
though there’s at least two kinds that they don’t have: toffee hammers1 and non-sparking beryllium-copper hammers2. Are there any other kinds of hammers that they are missing out on?
1 – These are not made of toffee, but are a specified design, according to the UK Ministry of Transport.
2 – I think people might use brass hammers instead. Can anyone who works in explosive gases please clarify?