During the initial stages of mineral exploration, apart form surface sediment sampling, the next best method of obtaining samples, especially those of sediment or rock beneath the surface is core drilling. Often done with a large, high torque slow powerful drill, core drilling brings up rock cores from beneath the surface allowing geologists to analyse the material beneath them. These core samples are often split into 1 meter sections and store, in sequence in drill core boxes. (also known as drilling boxes or core trays). This allows the safe storage and transportation of samples as well as allowing geologists to easily analyse the core samples when needed.