Utilize the input text as a context reference, choose the right relationship between Solid Energy and mining from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

The future of struggling mining company Solid Energy will be announced tomorrow, the company says.

Answer: industry