definiens: shall mean any occurr ence beyond the reasonable control of a Party that prevents or subs tantially interferes with the performance by the Party of any of its o bligations hereunder, if such occurs by reason of any act of God, floo d, fire, explosion, breakdown of plant, earthquake, strike, lockout, labor dispute, casualty or accident, or war, revolution, civil commotion, acts of public enemies, blockage or embargo, or a ny injunction, law order, proclamation, regulation, ordinance, demand or requirement of any government or of any subdivision, autho rity or representative of any such government, inability to procur e or use materials, labor, equipment, transportation, or energy suf ficient to meet manufacturing needs without the necessity of allo cation, or any other cause whatsoever, whether similar or dissimil ar to those above enumerated, beyond the reasonable control of such Pa rty, if and only if the Party affected shall have used reasonable eff orts to avoid such occurrence and to remedy it promptly if it shall ha ve occurred