Scrooge is a strong, relentless force and the 'hand' that forces the poor to work for the wealthy.
'grindstone' (a solid stone wheel used for shaping)- links to 1.
"Hard and sharp as flint"
'flint' - used in making arrowheads, which suggests that Scrooge isn't only unpleasant, but also very dangerous.
'flint' - easily broken/chipped, which suggest that Scrooge can easily be broken emotionally and can be changed quickly.
"Solitary as an oyster"
'oyster' - can produce pearls; precious, beautfiul products of the national world and growth takes 7 years. This suggest that Scrooge can take a long time to chnage for the better. The pearls can symbolise the glimmers of hope in Scrooge that he will change. Marley has also been dead for 7years so may be time for Scrooge to grow into a new person.
"It was cold, bleak, biting weather..."
Personification - the weather is so bad that is impacting people negatively.
Triplet, asyndetic list - the weather is progressively getting worse.
Pathetic Fallacy
"In a dismal little cell..."
Metaphor - Scrooge's office is like a prison to Bob Cratchit as he is being treated poorly - Scrooge almost acts like a prisonguard for the clerk.
"it must have run there when it was a young house, playing at hide-and-seek with other houses, and forgotten the way out again"
His house is isolated, just like Scrooge with society.
Personification - Scrooge's house is described as a kid who was playing hideandseek and forgot how to come out.