Miner's Coal Distributors does not mine coal itself, nor does it even store or handle the coal. Instead, Miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. What is Miner's?

Miner's is a drop shipper.

Explanation:

Drop shippers companies are distributors or "retailers" who carry little or no inventory but earn commissions on orders passed on to the manufacturer or original supplier. The goods in question are 'drop shipped' directly from the supplier to the customer.