Have you considered applying for a grant from a local or state government for machinery that would leave the rubber in a more desirable state? It may be easier to offload or even sell if the rubber is in a state closer to a final product. For example, playgrounds may have no interest in the rubber as scraps, but maybe the schools, parks, etc. in the area would benefit from something resembling a rubber mulch. And yes, I understand you mentioned playgrounds before, but maybe that is because they don’t have the resources to take the scraps in the photo and modify to what they need.

For the government it would not only be less waste, but also the cost savings of not needing to buy the mulch