Photo 1 : A digger puts corn silage to the storage place at the bio gas factory in Graden southern Germany, on March 5, 2013.
Photo 2 : A digger puts the digested into a truck at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 3 : A digger puts the digested to a truck at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 4 : A pipeline conveying biogas at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 5 : A pipeline conveying biogas at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 6 : A pipeline with biogas at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 7 : A pipeline with biogas at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 8 : A staff member checks inputs at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 9 : A staff member monitors the plant on a computer screen at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 10 : A staff member monitors the plant on a computer screen at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 11 : A truck stands on a scale for weighing at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 12 : A truck unloads corn silage to a storage place at the bio gas factory in Graden southern Germany, on March 5, 2013.
Photo 13 : A truck unloads corn silage to a storage place at the bio gas factory in Graden southern Germany, on March 5, 2013.
Photo 14 : A truck unloads corn silage to a storage place at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 15 : Close up of corn silage at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 16 : General view at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 17 : General view of the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 18 : General view of the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 19 : Pipelines conveying biogas at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 20 : Pipelines conveying biogas at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 21 : The truck driver shovels corn silage into the storage place at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 22 : The truck driver shovels corn silage into the storage place at the biogas factory in Graden southern Germany, on March 5, 2013.
Photo 23 : The weight of the truck on the scale with corn silage at the biogas factory in Graden southern Germany, on March 5, 2013.