Given the task definition, example input & output, solve the new input case.
You need to answer the question 'Are the given steps in order?', given a set of steps describing a process. Your answer must be either Yes or No. If the answer is No, that means the steps are out of order and do not make sense in the order they are in. If the answer is Yes, that means the steps are in order and make sense in the order that they are in. A set of steps are not in order if the steps reference information that is introduced in a later step
Example:  ['The seeds are dispersed by wind, animals, etc', 'The seeds reach the ground', 'Grow into new trees', 'The process repeats itself over and over', 'A tree produces seeds', 'These new trees produce seeds'] 
Output: No
These steps are not in order. The first step in this sequence is 'The seeds are dispersed by wind, animals, etc' but the step introducing the seed 'A tree produces seeds' is after the steps referencing the seeds. Therefore, the answer is No

New input case for you:  ['The coal is placed into carts or on a conveyor belt', 'Miners enter the mine', 'Miners remove the coal from the mine', 'The truck takes the coal to a power station.', 'The coal is moved up to the surface', 'The coal is loaded onto a truck', 'A mine is excavated in the side of a mountain'] 
Output:
  No  