I lived next to one for a while. They harvested on a 20 year cycle.
They clear-cut 1/20th of the 180,000 acres every year. Then, they let the land lay for a year.
One day a BIGGG dozer comes along, towing a roller with big teeth, mulching the stumps, and all else. After laying for a second year, they repeat that process. Back and forth, they mince everything and churn the soil.
Another year passes, and one day, the road is lined with school buses, early in the day. All day long, lines of folk, with bag of seedlings, and a "planting stick", walk abreast, lancing the soil with roots and stems.
Wait 20 years, and repeat!
That was probably a D9 Cat pulling a water filled drum chopper. I used to work in the forest industry. I've worked it from cruising the timber, harvesting, milling including paper mills to replanting.
That's why I knew the good doctor was full of...........fluffy sheets of soiled paper.