Usually when we get a new site permission we have a quick reckie over a few fields to make sure there is no green waste etc. On this particular day I had just finished the meeting with the landowner and had agreed which fields we would search for our 1st visit to their farm. The smallest of the fields was closest to the yard where I had parked so I started there. I walked out into the field and my 1st signal was a Stella can, followed by another one and then another one and then another one, som