Fencing stakes, mid-Wales. These had been pressure treated with "Tanalith C"hence the colour. They had come from low/no value Sitka spruce(Picea sitchensis)thinnings and tops, gaining added value. Sitka spruce grows rapidly in the Welsh climate but the timber is not at all durable outside. Correct pressure treatment may give these stakes a service life of over 20 years.
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