Drilling system, that is, drilling machines for recovering almost undisturbed cores from loose to solid ground; drill mounts with crawler drive or wheel drive for drilling rigs and rotary hammers, rotary hammers for percussive drilling, for explorations in the building and mining industry, water management, as well as for geotechnical and agricultural explorations; drilling rigs with double core barrels, namely, core catchers and liners for core drilling from loose ground, drilling machines, ...