There are no boring industries. None.
If you have someone who knows a lot about an industry and is an enthusiastic person they can usually identify the topics that people ask questions about.. and what they ask questions about is what they "think" is important... but they are usually not asking the questions about what they "need to know". And the enthusiastic industry expert knows the step-by-step guide for getting the job done.
These industries are thought to be boring because the average person knows very little about them.
I know a little about concrete.... If I had that concrete site I would be publishin' the "Concrete Bible".
----- Tell them why and when they should be using concrete and when and why they should be using asphalt
---- Tell people how to prepare the base (use lots of photos, use lots of video), tell them how deep they need to dig, tell them how different types of soil and water conditions require different methods of base preparation, lots of jobs go bad because drainage was not done right
----- Tell them what type of stone to lay down for the base layer (show photos), if they have a choice between limestone, sandstone, river stone, granite and traprock which one they should pick, what size that stone should be, tips for spreading the stone evenly to minimize hand work. what happens if you don't do it right,
---- Tell them the mistakes idiots make and what mistakes cheapskates make. It's easy to screw up a concrete job. Cheapskates screw up more concrete jobs than any other type of person and most of the professional jobs that don't go well were done by a cheapskate contractor. .
----- Tell them how to calculate how many cubic yards they will need.... make an online calculator... give a few ideas for using overage that might arrive on the jobsite
---- Tell them how to build the forms, what type of lumber to use, how to stake the project, how high they need to be, again tell them the mistakes that people made and show photos and videos....
---- Tell them how to finish the surface, what type of float works well, how much time you got, mistakes and videos....
---- Tell them about curing, how long it takes, what about covering it, how long to stay off, when you need moisture, tell them about care,
--- Tell them that the price of the material is only half the cost... if they live rural they will have to pay by the yard-mile for delivery and how much that might cost.
You put all of that stuff on the site and you will have a second class site. I didn't have time to type it all and don't know everything that goes into it..... but if you do a better job than anyone else you will have a great site that people will be using for their Bible. Does not matter if they tell some secrets, the average guy is still going to hire them for this job, you tell them enough so that they know that an expert needs to do it or it will be screwed up. A lot of people just want to know what is involved and how to spot a cheapskate contractor who is trying to give him a low quote and deliver shabby work.
The more you know about something the easier it is to write about it and the better job you will do. That is why it is best to have the industry expert do the content if possible and if that isn't possible why you need them helping alot.
If the industry expert isn't going to write the content author needs to get out to the job site with boots, gloves and a camera and see the entire process done three or four times. That is really expensive, you will pay them for at least four days of work.... but it is a good idea to do it unless you want crap work.
You know what I said above about cheap contractors screwing up a concrete job... the same applies to content jobs.
ADDED:: I always preach about the content expert doing all the writing. But sometimes that can't be done.... and in this situation here... it is probably going to be easier to make a concrete expert out of the gal who writes the content than it will be to make a first class writer out of the concrete guy.