The presented spear could have been forged either in the fifth or fifteenth century. In spite of the metallurgical examination carried out by specialists from the Jagiellonian University, it was not possible to determine the production date of the spearhead.

Carbide lamps consisted of two metal containers, one on top of the other. Carbide was the bottom one, whereas the top one contained water. The carbide container had a pipe going out of it with a burner at the end. At the bottom of the water container there was a small hole through which water dripped slowly onto the carbide.

This is a miner's oil lamp with a wick. In the second half of the eighteenth century, miners began using tin oil lamps, which were mostly fuelled by oil mixed with kerosene.