In this photograph taken on April 13, 2014, Afghan day labourers shovel coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers shovel coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourer Chaman, 37, poses at a coal yard where he works on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourer Ibrahim, 43, poses at a coal yard where he works on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourer Tagi, 30, poses at a coal yard where he works on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers take a break after loading coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers shovel coal at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers shovel coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers shovel coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers shovel coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers load coal onto a truck on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, an Afghan day labourer shovels coal at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourer Ibrahim, 43, looks on while taking a break during work at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, an Afghan day labourer rests after loading coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers rest in a shared room after loading coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers eat lunch in a shared room after loading coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, an Afghan day labourer pours a cup of tea while taking a break after loading coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers play cards while taking a break after loading coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers take a break after loading coal onto a truck at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai

In this photograph taken on April 13, 2014, Afghan day labourers take a break at a coal yard on the outskirts of Kabul. Coal labourers work an average of eight hours a day filling trucks with coal, each earning around seven USD on an average working day. Most of them come from the northern provinces, leaving their families behind in search of fortune in the capital. To cut the high cost of living the labourers live in rooms housing 18-20 people, on a diet that usually consists of tea and bread. AFP PHOTO/SHAH Marai