BMR Group says the board has been involved in ongoing discussions with the Zambia Environmental Management Agency concerning the environmental project brief application in respect of selling Waelz Kiln Slag.
ZEMA has requested that the EPB be upgraded to an environmental impact assessment, which would delay the start of WKS sales.
As part of the ongoing discussions, BMR has therefore submitted to ZEMA a letter of appeal.
Chairman Alex Borrelli said: "We remain confident that we will be able to sell the WKS in the near future and are hopeful our appeal to ZEMA will be successful. Our main focus is on the building of the processing plant which continues apace.
"We are currently in discussions with some excellent candidates for the role of project manager, an important position at the plant and expect to update shareholders shortly."