As reported on the Facebook profile of the Bolesławiec Bomb Disposal Patrol, unexploded ordnance was found near the reconstructed A18 motorway:
Today (Thursday, 20 May 2021), from 9:00 a.m., the road is scheduled to be closed in both directions on the Golnice (exit to Bolesławiec) – Luboszów (exit to Świętoszów) section!
Update 10:47
The bomb disposal specialists have completed their work; A18 has been reopened.
Bolesławiec bomb disposal specialists dealt with the dangerous find, a Soviet unexploded projectile from the Second World War. The damaged projectile was detonated at the training ground in Świętoszów.
Below is a video by Stefańczyk Studio: