https://phys.org/news/2018-07-house-peat-material.html

The most popular method for mining peat is milling. During milling, 10 to 20-mm layers are cut loose from the peat deposit and left to dry. For this method to pay off, most milling fields are larger than 100 hectares.

"So far, no one has produced peat composite as a construction material because peat prevents many materials from hardening. In our project, we managed to overcome this issue," said Liiv. Instead of the usual cement, scientists from Tartu use oil shale ash as the binder in their mix. In Estonia, it is estimated that about 7 million tonnes of oil shale ash are created in a year, only 5 percent of which is reused. The rest is deposited in ash hills and this creates considerable environmental pollution.