Texas Pacific Land Trust (the Trust) is engaged in sale and lease of land owned by it, retaining oil and gas royalties, temporary cash investments and the overall management of the land owned by it. The Trust's income is derived primarily from land sales, oil and gas royalties, grazing leases and interest. As of December 31, 2009, it owned the surface estate in 962,553 acres of land, which consisted of numerous separate tracts, located in 20 counties in the western part of Texas. The Trust also owns a 1/128 nonparticipating perpetual oil and gas royalty interest under 85,414 acres of land and a 1/16 nonparticipating perpetual oil and gas royalty interest under 386,988 acres of land in the western part of Texas. As of December 31, 2009, grazing leases were in effect on 99% or approximately 953,035 acres of the Trust's land. During the year ended December 31, 2009, it sold approximately 696 acres of land.