tariffs on imported steel have hurt the sector other countries and torricelli unreliability tricity supply has also contributed to higher operating costs not a pretty picture there both for workers and investors in the big mining corporations let's now speak to the w.'s correspondent erin krishna's in cape town area how important is the mining industry as an employer are we going to see big layoffs that south africa. since you seem to be having some trouble there with adrian adrian can you hear me you know there's some difficulty there adrian if you can hear me. ok we're going to our next story the united nations have called today world population day and says there are 7700000000 of us on the planet today and brace yourselves with another 2000000 people coming along over the next 3 decades in europe the population is shrinking but it's still rising in africa where it's expected to double by 2050 the trend will almost certainly put more pressure on the continent is also based on the say governments in africa need to invest more in infrastructure to cope with growing demand and create jobs