Over the next few months standards, guidance , policy, etc for textiles and supporting materials will be noted. Documents can be updated, changed, partly or fully verified and validated by one or more sources, so check with your officials and Subject Matter Experts. It is at least a starting place.
Even if you do not agree with the document, its often good to know what is being done, said, or not being planned and achieved. This is offered from the position that “you may not know what you do not know” and the documents could provide a starting point.
This discusses best tanning hide practices.
If you wish to see tradition hide tanning contact Skyeskyns on the Isle of Skye, Scotland. Call ahead to let them know you are coming. Products are also available at the small, busy tannery. https://www.skyeskyns.co.uk/skyeskyns/about-us/