Those figures are very inaccurate.
Firstly, yes we need an energy source. Yes the earth is finite, but not that finite. We do have acceptable means of renewable energy atm to substitute a reasonable amount of finite resources currently consumed, but there expensive. We currently have no form of renewable energy that can generate the constant 24/7 with capacities to handle the peak loading times we are accustomed to for within 1000% of the price we are accustomed to paying. And the ones we do have even if we wanted to pay that much ($80,000 a quarter power bill for the average family in suburbia anyone?) the ones we have that can provide it have had no real research into what long term affects THEY might have on the planet. To top it off NOT A SINGLE ONE can be produced without spending energy some other way, generally there manufactured using power from either coal or LNG.
If you do not understand any part of that paragraph then go do some research, if you do, read on.
An Australian contract worker that you mention is still an Australian tax payer, Contract workers from other countries working in this country still pay tax in this country, as well as imports. They also spend money whilst they are here. Yes having an all Australian citizen working force is prefered in many ways, but that doesnt mean imports or foreign contractors dont help the economy here somewhat.
A Strong export helps our economy as well, remember.
Your oil and natural gas predictions are out by about 600%.
Phosphorous is not NEEDED in agriculture, Its just used due to convenience and in a lot of cases stubbornness..."My father did it like this and his father and his father before him," There are better ways.....Honestly i'd be happier if they stopped using it and went back to more natural means of producing crops, In part this would require less machinery and more manpower producing jobs.
The list probably does go on, but with no link to follow and no more information I can only assume thats all you could think of.
The reason they are extracting CSG and the like is due to the greenies (who arnt all that green) sprouting on looking for a better solution to our current power generation tactics.....None of which are that great. CSG is a promising one that has been used for decades....But now there unhappy with that and sprouting lies and half truths to try to stop that, they wont be happy untill were all living in the 1880's again.....THen they will whinge about steam power so we will be back to the 1780's....
The two biggest issues in this world right now are overpopulation and political correctness.
The only thing political correctness has to blame in this issue is giving the wingers someway to winge without people with brains being able to tell them to shut the frOck up and deal with it.
Overpopulation is the biggest issue. The world needs to at least plateau population wise. Families with 3 or more children are the main issue, were not in the dark ages anymore, everyone has a fair life expectancy now days, no need to "breed or die"
a flaming, lol i like it.
First i didnt make those figures up, although someone else could have, and i did say "if they are correct question mark". http://www.theguardi...rces-population
The point i was was trying to make with the workers was relating to to economic benefits the mining companies spruik. Contract workers are contracted for a job, say to dig 1,2 or 10 wells, what ever the case maybe. So your contract might last 6 months say then your contract is over. So in my opinion those employment figures can be inflated.
Then theres the actual revenue the government collects. The worker pays income tax then collects some more revenue on most of the things you buy with your pay. so all of the workers money stays here while the companies probably pay about 5% company tax and the rest goes ????
So it is my opinion the the economic benefit is not as big as they say. but hey thats only my opinion. could be wrong, just how i see it, the cynical bastard i am.
I agree with most of your comments on energy, but i think with more investment the price of renewable will come down, but as usual it comes down to $$$$. Like back in the late 1800's a man named Nikola Tesla (invented radio, radar, x-rays and a/c generators and more) said to Westinghouse (industrialist how bought a/c motor patent) he could create electricity from the air and transmit it wireless to anywhere in the world. Westinghouse was not interested because he couldn't put a meter on it. So it does depend on where the money is invested. As for long term effects there just an after thought of any product. Asbestos, mobile phones, hell back in the day you could be drinking mercury, putting lead on your face and get blood letting at the barbers.
I did not say phosphorous is needed in agriculture (although they'll have a hard time without it). I said they use it in agriculture but it is a vital element that plants need, as in N-P-K nitrogen, phosphorous and potassium the 3 primary nutrients for plants.
And yes over population is a big problem, and is only going to get worse no doubting that. But Australia is the lucky country, where else can you get paid to have kids, and if you can't afford them we've got that covered too. A bloke down the road from me has 7 yes 7 kids and no job. must take about 4-5 tax payers to cover that one