end of the upper straight section 70 mud and clay unclogger bar 65 also has a second straight vertical section 72 which extends downwardly from parallel to the longitudinal center line of housing 24 and drive shaft 67 but is located on a first e g right side of the common longitudinal center lines referring still to fig8 it may be seen that mud and clay unclogger bar 65 also has a second straight angled section 73 which extends radially inwardly and at a slight downward angle from the lower edge of second straight vertical section 72 and extends radially beyond the longitudinal center line of stirrer collar 66 to the left side of the center line a third left straight vertical mud and clay unclogger bar segment 74 extends downwardly from the lower left end of second angled mud and clay unclogger bar segment 73 and is joined at a lower end thereof by third right wardly and downwardly angled straight section 75 the lower end of section 75 is terminated by a terminal downwardly and radially inwardly angled bottom angled straight segment 76 which forms with segment 75 a v shaped lower end section as shown in fig1 and 2 the lower end 77 of lowest mud and clay unclogger bar segment 76 is approximately aligned with the lower transverse edges of cutting teeth 45 fig9 13 show how vacuum assisted post hole digger apparatus 20 according to the present invention is used as shown in fig9 left and right handles 26 l 26 r of post hole digger tool 21 are grasped in the left and right hands respectively of an operator a the tool 21 is then positioned vertically above.