LImestone quarries, opencast mines that have a great impact on the landscape, have remained active since the formation of Urkiola Natural Park.
42.
The house and estate were then sold to the National Coal Board ( NCB ), who operated extensive opencast mines in the surrounding area.
43.
It is a working opencast mine located in Arngill Beck on the north-east flank of Close House Crags, in the Lunedale Forest.
44.
By using this successful technology for the first time in India, the abandoned Sharda opencast mine has been a landmark in the Indian mining industry.
45.
On 26 March 2010, a spokesman for Energy and Resources Minister Gerry Brownlee said that opencast mining in Paparoa National Park could not be ruled out.
46.
After the closure of the mine a Wildlife Reserve area was set up consisting of woodland and pond areas where the opencast mine used to be situated.
47.
In 2006, Solid Energy bought Newvale Coal Co Limited and acquired the Newvale opencast mine, located in the Waimumu coal field in Edendale dairy plant.
48.
The preparation work lasted seven years, as it was also necessary to demolish all houses in the transfer path and fill in the former opencast mine.
49.
The walk comprises around 3 4 miles of ash path from start to finish, with some being concreted ( remnants of the old opencast mining area ).
50.
Fire-setting was used extensively during opencast mining, and is also described by Pliny in connection with the use of another mining technique known as hushing.
