I think it's good choice to looking for Tem2 in that part of Poland. Close to Wroclaw in Glogow, Legnica there you can find trains from Pol-Miedź Trans company (this is operator which is owned by big cuprum plant). They trains you can find in all west Poland. Also they using a lot of M62. If you have a time I recommend Leszno, there You find Romanian ST43 class (diesel engine) or Wolsztyn (about 100 km form Wrocław). In Wolsztyn You find steam engine museum and every day from Wolsztyn depo goes two pairs of passanger trains to Poznań hauling with normal gauge steam locomotive!
however from Wroclaw You have to take whole day, because there is no straight connections, and you have to change train in Leszno.