Because our metal detector club  frequently came into the news, we were now a new phenomenon.  The requests for help in finding lost objects increased rapidly.  So we decided to offer our services.
In one of the first cases, we received a letter from a lady whose wedding ring was lost for over 25 years while working in her garden.  All searches for the ring had been in vain.  We managed after a few hours to trace the ring. Needless to say how happy the lady was!

In another case we were contacted by a gentleman from Brussels who was living in a castle in Waterloo.  According to this gentleman his relatives had hidden jewels and precious commodities during the war of fear of the invaders. He had some indications for us where we could find the treasures.  All the family members were now deceased, and all attempts to find the family heirlooms were fruitless.  It was all complicated by artillery shells during the war, the whole environment had changed.  So there was no landmark.

The search was difficult.  Due to lack of landmarks, we repeatedly had to change position.  Yet the success was not immediate.  After many hours of research, the first “treasures” were brought out!  A real success!
Also I remember a case of a man from Achel who was still able to remember where at the end of World War II ammunition and weapons were buried by the fleeing German soldiers.  We were brought in and thanks to his good memory and placeholder we soon brought out the first grenades. This turned out to be not entirely harmless!

These are just some stories of people who contacted us.
By looking closer to the events of the past, I found utensils from all periods including bronze axes, jewelry, bronze and silver coins, lead cannon balls and musket balls, Roman clothes pins (fibulae), helmets and weapons.
Below here I share with you the technology I used to find remnants of the Old Belgians, our pre-elderly.
When looking for the oldest residents, I found axes, spear points, grinding stones and cemeteries.  These were burial mounds where urns (axis) of the deceased were buried.

The search for stone utensils made out through plowed fields to walk and search for stones that were used as everyday tools.  This can also find the settlements.  These settlements are often found on higher ground.  This contrasts with the lower places where you often can find drinking places (witness the broken pots and shards).
During the search for settlements and cemeteries you must be mindful of the structure of the earth.  In a plowed field, one can well perceive color differences.  The lighter color sand indicate that this was ever dug.  This points to civilization.  Usually you can find here also return objects (or fragments of baked clay pots, metal objects).
A metal detector is not appropriate for this work.  For this I use a thin, long metal pin in the shape of a T which is equipped with a sharp point.  On top of the dipstick is a handle.  Depending on your height you can make yourself a dipstick to length.

See also this info:

3000 years old bronze treasure