The Jughandle Creek trestle collapsed in the 1906 San Francisco earthquake and was rebuilt . The first Mallet locomotive in the Redwood Empire was delivered in 1910 . Like the others , it was assembled in Caspar after arriving in pieces on ships . Wyes were constructed at Caspar and at Camp 1 to turn this large locomotive . Locomotives had previously burned wood , but Mallet number 5 had the capability to burn oil , and locomotives 2 , 3 and 4 and the steam donkeys were shortly converted to burn oil . A January , 1914 , storm caused a landslide closing the tunnel . The sawmill was closed until the tunnel was reopened that summer . Locomotive number 1 was retired in 1914 . Shay locomotive number 6 was purchased to work on an isolated branch line on Three Chop Ridge connected to the remainder of the railway by an inclined tramway . Locomotives 2 , 3 and 4 worked on branches out of Camp 1 while Mallet locomotive number 5 pulled trainloads of logs from Camp 1 to the mill at Caspar . On 19 April 1923 locomotive number 5 derailed and wrecked after hitting runaway horses on Digger Creek trestle . Locomotives 2 and 4 were damaged when the Camp 1 engine house burned two months later . The railroad had grown to a length of 30 miles when the last locomotive ( Mallet number 7 ) was delivered in 1924
1906 San Francisco earthquake
1906 San Francisco earthquake
Caspar, South Fork and Eastern Railroad