High tech equipments

I just couldn’t believe how quick these people dig holes for the new electric poles near our community. It’s like less than three days of working and WALAAAHHH they’re finished. And I guess it’s a perfect calculation of the depth of the wholes and then putting something to make it stand strong on the ground. Also, on their last days, they were cutting the poles that were being used years ago. And everything was quick since they were using high tech equipments.