Thanks for the comments, suggestions and encouragement.
The gravel washing takes place in a 5ltr plastic paint kettle with holes drilled in the bottom. The normal process is half a shovel full of dirty gravel into the kettle. This is then submerged into a water filled hole in the ground and swilled around, drained and any rubbish picked off the top of the gravel. This process is then repeated before the garden spray is used to spray the now soil free gravel clean. The small amount of fresh water keeps the 'washing well' topped up. It takes me back to seeing coal washeries at work where Baum washers used a dense medium (known as twaddle), to float the coal away from the dirt. In my case the soil in the water makes a dense mix on which the rubbish floats away from the stone.
The surveyors were out again this morning and it became clear that the dirty gravel stockpile was well and truly in the way of any further railway progress. So, the rest of the day saw the washery go into intensive operation, the washery operatives got some Saturday afternoon overtime! This is back breaking work and a method of easing the work was needed today. This turned out to be rinsing the gravel in the pile with the hose before it went into the bucket. It was worthwhile and I think I reduce the stockpile by about a quarter.
I said yesterday that the current work wasn't worthy of a photo, however, just to prove SOMETHING is happening I took a shot at the end of washery production today.....

In the fore ground is the 'washing' pond, behind it the dirty gravel stockpile. Behind that you can just see the white paint sprayed today marking the course of the railway. The Filcriss will be bent round onto that alignment. Immediately off the end of the white straight line the railway will swing back toward the wall, you can see just how much the gravel pile is in the way! Off to the rear left is the clean gravel being stockpiled in the operating pit. The more observant may also notice that the fruit nets at the far end of the garden have also come down today. I picked the last of the raspberries this morning so there is no more need for them and the avian air traffic control can remove the obstacle from their flight plans!
Provided the back doesn't put paid to it I hope to press on with the washing tomorrow - although I really MUST show my face on the allotment sometime!
All the best,
Andrew














