delivered the opinion of the court.
On January 15,1913, Edward P. Jones, Junior, and a man named Berm were working for the Crescent Coal Company in its coal mine as shot firers, when an expío*220sion occurred by which they were killed. Jones left a widow, and this suit was brought by the administratrix of his estate for her benefit, under section 29c of the Act concerning Mines and Miners (J. & A. ¶ 7503). The cause was tried upon a declaration and a plea of not guilty. Plaintiff had a verdict and judgment for $2,800, from which defendant below appeals.
The verdict and the judgment rest on the fourth count of the declaration. Besides many allegations showing that appellant was operating this coal mine and, that Jones was a shot firer therein in the second south entry, that count averred that said entry and other entries connected with and near it were so dry that the air had become charged with dust and had been in that condition for a long time prior to said date; that appellant wilfully neglected to have said passageways and entries regularly and thoroughly sprayed, sprinkled and cleaned, as required by statute, and that by reason of such wilful neglect and while Jones was firing shots for appellant near said entry, said dry air charged with dust caught fire and exploded with great force, because appellant had wilfully neglected to have such roadways or entries regularly and thoroughly sprayed, sprinkled and cleaned, and that by reason of such explosion Jones was killed. There are two provisions of the statute on this subject. Section 14m (J. & A. ¶ 7488) is as follows: “In case the passageways, roadways or entries of any mine are so dry that the air becomes charged with dust the operator of such mine must have such roadways regularly and thoroughly sprayed, sprinkled or cleaned.” The fifteenth clause of section 20a (J. & A. ¶ 7494) prescribes the following among the duties of the mine manager: “He shall see that all dusty haulage roads are thoroughly sprinkled at regular intervals designated by the mine inspector.” Jones was firing shots in rooms off the second south entry, and Benn in rooms off the first south entry. After the explosion the body *221of Jones was found in the second south entry near room 6 and the body of Benn in the first south entry near room 3. Boom 1 in each entry was furthest north. The air was moving in the entry from north to south. That part of the mine had been operated for several months and we are satisfied from the evidence that these entries were very dusty. Appellant had never sprinkled them or sprayed them until a few days before this accident, and they had not been sprinkled or sprayed at all for a day or two before the accident, and were very dusty on the day of the accident and prior to the explosion. If appellant failed to obey the statutes above quoted, the law will imply that that failure was wilful. This dust was partly coal dust and partly arose from the drying up of the earth in the entry. Appellant argues from the evidence that this was not coal dust but earth dust and that, if this was a dust explosion at all, only an explosion of coal dust would render appellant liable; and also that this was not a dust explosion and therefore appellant is not liable under this fourth count and the statute. We are of opinion that the jury were warranted in finding from the evidence that if this explosion originated from gas resulting from the firing of a shot, still that explosion reached the entry and fired the dust in the air, and that it reached and killed Jones because the air in the roadway was charged with dust, and under such circumstances appellant would be liable, as shown in Davis v. Illinois Collieries Co., 232 Ill. 284. Appellant argues that Jones and Benn commenced at the wrong place in that entry to fire the shots, and that the gas from the first shot remained in the mine because they had begun to fire at the wrong place, and that therefore they were guilty of negligence and that their negligence caused the explosion and therefore appellee could not recover. If the wilful failure of appellant to properly spray and sprinkle the entries caused the explosion, then the contributory negligence of the deceased *222is not a defense. Peebles v. O’Gara Coal Co., 239 Ill. 370; Hougland v. Avery Coal & Mining Co., 246 Ill. 609; Brunnworth v. Karens-Donnewald Coal Co., 260 Ill. 202, and many eases cited in the latter opinion. It is held in Davis v. Illinois Collieries Co., sufra, and Hougland v. Avery Coal & Mining Co., sufra, that the fact that the deceased fired a shot prepared in an unskilful manner is not a defense. It is held in Brennen v. Chicago & C. Coal Co., 241 Ill. 610, and Hougland v. Avery Coal & Mining Co., sufra, that shot firers are within the protection of this statute. We are therefore of the opinion that the jury were warranted by the evidence in finding a verdict for the plaintiff.
It is urged that the court erred in admitting in evidence the verdict of the coroner’s jury, which found that the deceased came to his death at the mine of appellant by asphyxiation from gases generated from an explosion of accumulated coal dust near room 1 in the second south entry, caused by a blast or blasts discharged in the process of mining coal. Section 14 of chapter 31 of the Revised Statutes (J. & A. ft 2405), relating to coroners, makes it the duty of the coronér’s jury to inquire how, in what manner, and by whom or what, the said dead body came to its death, and of all other facts concerning the same, together with all material circumstances in any way related to or connected with the said death. Under the authorities, a verdict of a coroner’s jury is admissible in evidence, which is confined to finding those facts concerning which the jury are directed to make inquiry. U. S. Life Ins. Co. v. Vocke, 129 Ill. 557. This verdict is confined to such an inquiry. It does not find that appellant wilfully or negligently or otherwise failed to spray or sprinkle or clean any passageways or entries in this mine. It is argued that said verdict was not competent because it did not come from the office of the circuit clerk, but had always been among the files in the coroner’s office in the courthouse. The verdict of the *223coroner’s jury held to have been properly admitted in evidence in Stollery v. Cicero & P. St. Ry. Co., 243 Ill. 290, was not shown to have been filed with the circuit clerk.
John Dunlap testified as an expert for appellant. He had witnessed an explosion of dust in June, 1914, and had witnessed another explosion about five years before, and he was asked various questions as to those explosions, to which the court sustained objections. The witness did not know what the condition of appellant’s mine was just before the explosion which caused the death of Jones. There was no proof that the conditions were the same at the time of those other two explosions. Testimony as to those other explosions and the theory of the witness as to what caused them and what effect followed them would have introduced into the case immaterial issues. The objection "to said questions was properly sustained. Appellant was permitted to put hypothetical questions to this witness and had his views on every material subject to which he was competent to testify, He was asked what in his opinion caused the explosion here in question and whether in his opinion it was a gas explosion or a dust explosion or a gas explosion augmented by a dust explosion. If these questions were material, then they asked for a decision upon the very question to be submitted to the jury, and were therefore incompetent. If they were immaterial, then it was not error to sustain objections to them. It is obvious from other evidence that a dust explosion could originate in the condition of the gas resulting from firing shots. He was asked to state this from his examination of the mine and from his experience, without asking him to detail what he learned from his examination of the mine. We are of opinion the court did not err in its rulings upon the testimony of this witness.
Complaint is made of instructions Nos. 6, 8,9 and 11 given at the request of appellee. Their object was *224to tell the jury that if the appellant wilfully violated the statute first above recited, and thereby caused the death of Jones, it would not be a defense that Jones or Benn had been negligent in the manner of firing the shots or that Jones had been negligent in any other respect which might have contributed to his death. They are supported by authorities above cited.
Appellant complains of the refusal of certain instructions marked “A,” “B,” “C,” “D,” “E,” “F” and “G-.” The court gave eight instructions as requested by appellant* and modified and gave several other instructions requested by appellant, and appellant seems to have had all the principles of law stated to which it was entitled. None of the seven instructions, of the refusal of which complaint is made, are correct. Some omit necessary elements; some omit to submit whether the failure of appellant to sprinkle was wilful; others are formed so as to give the jury to understand that if the explosion originated in an explosion of gas, resulting from the firing of a shot, then appellee could not recover, omitting the consideration of the evidence tending to show that this explosion was communicated to the dust in the air in the roadway and would not have reached Jones if the roadway had been properly sprinkled, and ignoring the things suggested in Davis v. Illinois Collieries Co., supra, on page 290.
We find no reversible error in the record and the judgment is therefore affirmed.
Affirmed.
Mr. Justice Niehaus took no part.