Utilize the input text as a context reference, choose the right relationship between Aurizon and coal 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.

Plans to build the rail link that would introduce Galilee Basin coal to the Aurizon network have been shelved and Hockridge does not expected them to be removed from the dust until end the of the decade at the earliest.

Answer: product_or_material_produced