Abstract: A mine disposal apparatus is capable of carrying out works including preparation works such as a vegetation work, a collapsed sediment removing work, etc., and safely and surely disposing personnel mines separated from the tank mines, unexploded shells, etc., and further effectively improving the disposed lands to farmlands. The mine disposal apparatus comprises a heavy vehicle (1) used for shovel type machines such as back hoes, a rotary cutter (9) is attached in place of a bucket of the shovel machine to a distal end of a derrickable and foldable arm (2) of the heavy vehicle (1), the rotary cutter (9) comprising a rotational drum (10) having cutter bits (11) embedded in a circumferential face of the rotational drum and being capable of cutting earth up to a depth of 30 cm or more.

Abstract: A television tuner comprises a VHF tuner section and a UHF tuner section and is configured in the two tuned modes of VHF high band and VHF low band between which the input tuning circuit of the VHF tuner section is switched by a diode in response to a source voltage. The television tuner further comprises a bias circuit for biasing said band-switching diode in reverse or forward direction by use of the UHF band source voltage during the receipt of UHF band.