This is an appeal by defendants from a judgment in favor of plaintiff, Northwestern National Insurance Company of Milwaukee, Wisconsin, a corporation, in the sum of $3,000, and from a judgment in favor of John E. Carson, Cornelius Prugh Harnish, trustees under the will of William S. Prugh, deceased, and Marion Wright in the sum of $3,300. The action was to recover damages resulting from the alleged negligence of defendants and was tried without a jury.
The evidence being viewed in the light most favorable to the plaintiffs (respondents), and pursuant to the rules set forth in Estate of Isenberg,
Shortly prior to April 19, 1943, defendants sent to North American Metals Company ten sacks of metal alloy castings. Accompanying them in accordance with their established practice was a purchase order stating the castings were aluminum alloy castings heat-treat 195. North American Metals Company’s general manager, Mr. Leidig, had previously received similar shipments from defendants accompanied by similar purchase orders and had been orally assured by defendants that aluminum castings heat-treat 195 would be the only type of castings that would be sent to him. The number of the purchase order signified that defendants expected the castings to be immersed in a molten salt bath at between 925 and 970 degrees for a period of 12 hours. Before immersing a portion of the shipment in question Mr. Leidig saw that the color of some of the castings' differed slightly from the color of other castings in the same shipment and noticed a difference in the weight of the castings from those previously received. He thereupon rechecked the purchase order and examined certain test-bars which accompanied the shipment, and upon satisfying himself that the shipment was represented to be aluminum and was to receive heat-treat 195, he lowered the castings into a salt bath consisting of sodium nitrate heated to 900 degrees Fahrenheit. In fact, however, the shipment consisted of six sacks of aluminum castings and four sacks of magnesium castings. When the magnesium came in contact with the sodium nitrate bath a violent explosion took place resulting in a conflagration which caused damages to the plaintiffs in the sum of $6,300.
Defendants admit that they were negligent but con
This proposition is untenable since the law is settled in California that an intervening act of a third person, negligent in itself, is not a superseding cause of injury to another which the actor’s negligent conduct is a substantial factor in bringing about, if (1) the actor at the time of his negligent conduct should have realized that a third person might so act, or (2) a reasonably prudent man knowing the existing situation when the act of the third person was done would not regard it as highly extraordinary that the third person should so act. (Mosley v. Arden Farms Co.,
Applying the foregoing rule to the facts in the instant case it is apparent that defendants, when they delivered to the North American Metals Company the magnesium castings, should have realized that a third person might assume that such castings were aluminum in view of their appearance and the fact the purchase order stated that they were aluminum and that on previous occasions they had delivered to the same parties aluminum castings; and defendants should have further realized that such third person might immerse the castings in a sodium nitrate bath with a resulting fire. Likewise defendants, exercising reasonable prudence and knowing the foregoing facts, should not have regarded it as highly extraordinary that the North American Metals Company would immerse the castings in a heated sodium nitrate bath. It thus appears that defendants’ negligence was a concurrent and a proximate cause of the damages suffered by plaintiffs.
Katz v. Helbing,
Schwartz v. California Gas etc. Corp.,
There is nothing in Berry v. San Francisco & North Pacific Railroad Co.,
In Catlin v. Union Oil Co.,
For the foregoing reasons the judgment is affirmed.
Moore, P. J., and Wilson, J., concurred.
Appellants’ petition for a hearing by the Supreme Court was denied April 29, 1946.
