The world's largest and oldest metals exchange highlights three options and requests feedback by market participants by Oct. 28.

The move is by far the most significant restriction on Russian supplies by the world’s main metals market since the invasion of Ukraine.

Rusal, the world's largest aluminum producer outside China, is expected to account for 6% of global supplies of the metal this year.

What will happen to Russian metal is one of the hottest topics of debate among traders.

It's clear the LME isn't going to be rushed into any decision on whether to continue accepting Russian metal against its contracts, writes Andy Home.

The deal, valued at $3.3 billion, gives Rio Tinto a 66% stake in the giant Oyu Tolgoi copper-gold mine in Mongolia.

Some buyers have said they are shunning Rusal's metal, while others are securing price discounts at the same time as the industry negotiates supply deals for 2023.

Reuters sources say the exchange was planning to discuss banning new deliveries of Russian metal so its warehouses cannot be used to offload hard-to-sell stock.