Mining Industry writers / contributors

We publish industry specific B2B magazines in Australia for following industries. Mining in general Mine Safety Health & Aged Care Real Estate Im needing contributing writers who have 'cutting edge' usable articles for us to publish. We also in each edition have feature topics in which we need a fresh article to open the feature up with. Example 1, in next edition of our Mine Safety publication we have an featue on Mine Site Software so we would need 1000 - 2000 word article on the current status of what types of software the industry uses, how and why it is used and its advantages, disadvantages etc. Example 2, in next edition of our Healthcare publication that is distributed to key decision makers within every private and public hospital we have a feature on Food Services - overview including catering and equipment. We have a number of regular columns (Departments) in one example a department in every edition will be titled Financial Matters so we require a regular contribuor for each edition with a 1000 word article freshly written on a latest Financial topic of interest.