Concerns are being raised over developments at a quarry, which could see it producing three times more material than first expected.

Burkroyd Stone, the owner of Ten Yards Quarry, near Denholme, has submitted a planning application to extend its operations to produce 65,000 tonnes of flagstones.

Councillor Michael Ellis said he will be drawing Keighley Town Council's attention to parts of the document, which appear to suggest developers want to excavate a total of 175,000 tonnes of material.

He said: "There are problems that would give me concerns. If it was 175,000 tonnes that would be quite a step up from what has been produced over the current years."

If such a large amount of material is going to be quarried an environmental impact assessment will need to be carried out, to gauge possible the damage to the landscape.

Denholme Town Council mayor Michael Powell said: "There seems to be some issue about the application. It is a complex document.

"We need to look at this document far more carefully. We are hoping to bring it up at the next planning meeting."

A spokesman for Burkroyd Stone conceded the planning application was ambiguous and might have been difficult to understand.

The spokesman said: "A letter has been sent to Bradford Council making it unequivocally clear that we are only removing 65,000 tonnes of stone."

The company hopes to quarry 13,000 tonnes a year for five years.