Barnsley moved as much as fourth in Sky Guess League One after a 2-0 house win over South Yorkshire rivals Rotherham, who at the moment are winless towards the Tykes since 1982.
Jon Russell opened the scoring earlier than Stephen Humphrys got here off the bench to double the lead late on.
Joe Rafferty struck a fierce effort goalwards inside three minutes for the Millers, however the onrushing Barnsley defenders have been in a position to block.
The hosts took the lead after 32 minutes by way of Russell.
After Dawson pulled off a spectacular save to disclaim his headed effort, he pounced on the unfastened ball and made no mistake to provide his facet the benefit.
It regarded as if Rotherham have been going to stage with 18 minutes to play when Jack Holmes was discovered on the again put up, however Barnsley goalkeeper Ben Killip recovered effectively to maintain a close-range effort out.
Humphrys added a second for the Tykes with 4 minutes remaining when he discovered himself behind the final line of the Rotherham defence and smashed into the bottom-right nook from outdoors the field.
