Screwfixed

The ground-to-air rocket launcher that did for Prigozhin? Or an innovative Swedish system of testing the ability of the terrain to withstand force?

If you plumped for the latter you are correct. These guys came to test a new device on the land where we are having a solar array installed. Normally, the solar panels have to be fixed to a concrete foundation but if the ground has sufficient depth and strength they could be screwed in more or less directly. It's a windy site, less than a mile from the coast, but the results showed that the ground could withstand two and a half tonnes of pressure so the prospects are good.

This is also the field where 650 tiny trees have been planted to create a future woodland but, cunningly, the area where sunshine will be harvested has been planted accordingly,  with low-growing shrubs only. That's the idea anyway - we won't be around to see it fully grown.