Several major Australian industries have reported a slow-down in profit and productivity linked to uneasy commodity prices.

The report by stock exchange analysts Deloitte says Western Australian companies are experiencing some unpleasant market conditions on the back of diminishing mining profits. In its assessment of all major WA exchange-listed companies, specifically tailored for the annual Diggers & Dealers conference, Deloitte claims an overall drop in value of 10.9% in the last year, closing at $125.6 billion. The analysts claim the result is driven largely by volatile commodity prices and uncertainty surrounding economic growth, combining to impact manufacturing activity and investment decisions.

The Deloitte report has also shown figures for the drop in many commodity prices over the 12 month period; gold fell 23.9%, silver 30.4% and iron ore 14.4% during the 2013 financial year.

Deloitte Lead Audit Partner Tim Richards says the flow-on effect has run through several other industries. There has been a reported downturn in adjunct markets such as manufacturing and engineering. Deloitte has not speculated on whether these conditions are set to improve, or what could be done to prop up the sectors which are so linked to mining profits.

The latest Western Australian stock exchange index and analysis is available here.