Timber Sale Contract Clauses. 167 



recognized that (h) (h'r=recent revision) snags are a fire menace 

 and undoubtedly if half alive are a menace in spreading forest 

 tree diseases. 



RESTRICTIONS IN LOGGING BY DONKEY ENGINES. 



26. (a) All donkey or other steam-power engines not burning oil for 

 fuel shall be equipped with a spark arrester satisfactory to the Forest 

 officer, a steam pump, 200 feet of serviceable i inch hose, 6 buckets, and a 

 constant supply of the equivalent of 6 barrels of water ; all such equip- 

 ment to be suitable and available for fire-fighting purposes, (m.) 



(b) If donkey engines are used, the rigging shall be slung, as far as 

 practicable upon stumps, or marked trees, and when possible the grab hook 

 shall be used in all cases rather than the wire choker, (m) 



(c) This contract is intended to provide for logging in the woods by 

 means of 



(Indicate whether by horses, donkey engines, etc.) 



Any other method of 



logging may be employed only with the consent of the Forest officer 

 approving tJiis contract and under such conditions and restrictions as 

 may be agreed upon with him. (To be inserted especially where there 

 is a probability of substituting steam logging for other methods, (m). 



(c) This agreement contemplates the use of the ordinary methods of 

 logging followed in the territory in which the sale area is located, 

 known as steam donkey logging. Should the purchaser elect to use an 

 overhead cable system or other methods different from those ordinarily 

 emplo3'ed in the territory at the time of execution of this agreement, 

 the use of any such system or methods shall be subject to such modi- 

 fications as are deemed necessary by the Forester for the adequate protec- 

 tion of reproduction and unmarked trees. 



(d) Donkey engines or steam skidders will be used only with the writ- 

 ten approval of the Forest Supervisor and will be allowed only under 

 restrictions which will prevent fires, and only in areas in which the 

 damage done to the remaining timber and reproduction will be negligible, 

 (w. y. p., Sitgreaves, Apache, D 3, 1912). 



(e) The use of donkey engines or steam skidders may be forbidden 

 by the Forest officer in charge upon any portion of the cutting area in 

 this sale. If allowed, the points at which they shall be set up shall 

 be subject to the approval of the Forest officer in charge; the ground 

 around each shall be cleared of all brush and inflammable material ; and 

 each donkey leader or skidder shall use coal for fuel and shall be 

 equipped with efficient spark arrester, subject to the approval of the 

 Forest officer in charge, (w. y. p., Coconino, D 3 1910). 



(f) If steam logging appliances are used in this operation they must 

 be operated so as not to injure the timber left standing on the sale 

 area. (w. w. p., D. F., w. h., w. 1., Coeur d'Alene, D i, 1910). 



(g) Efficient spark arresters shall be maintained on all donkey engines 

 and other wood-burning boilers operating on and near National For- 

 est land. (s. p., w. y., w. f.. Sierra, D 5, 1911.) 



(h) At each setting of a donkey engine or other steam logging con- 

 trivance the ground shall be cleared of all inflammable material for a 

 distance of 50 feet in all directions. A watchman will be provided by 

 the company during the noon hour for each donkey, (s. p., w. y. p., w. 

 f., Sierra, D. s, iQii). 



(i) At each setting of each donkey engine or other steam logeing con- 

 trivance, the ground shall be cleared of all inflammable material for a 

 distance of 50 feet in all directions. During the period of June ist to 

 October ist of each year, no donkey engine or other steam logging con- 



