Ponies were used in the mines. Since large draft horses were to big to fit in the mines, they used ponies to carry tools and pull the mining carts.
An ostler (hostler) looked after horses. There used to be horses in mines.
I am not sure, but i am pretty sure that it was Draft horses.
shire horses
The horses used are mainly draft types and draft type crosses.
Clydesdale's are commonly used however Arabs and some quarter horses may be used depending on the type of carriage it is pulling
carring coal in mines, ploughing etc. but some horses still plough now
Diamond mines are used for mining diamonds.
henna
trains clipper chip horses
all types
a horses type- im not sure if you mean the breed or the actual type: the 'type' of horse could be what the horse is used for- e.g. a draft horse (used for heavy work) a hack, a show horse etc a breed of horse is a specific type of horse, e.g. friesian, arabian, shetland there are also ponies and horses, horses being larger than ponies (14.2 hands or above) :)
It depends on what type of ground they are running on. Horses with shoes are typically used on trails.